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*ARMY TM 9-1005-319-23&P

AIR FORCE TO 11W3-5-5-42

NAVY SW370-BU-MMI-010

TECHNICAL MANUAL

FIELD MAINTENANCE MANUAL

(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

FOR

RIFLE, 5.56MM, M16A2 W/E, PN 9349000

NSN 1005-01-128-9936 (EIC:4GM);

RIFLE, 5.56MM, M16A3 W/E, PN 12012000

NSN 1005-01-357-5112;

RIFLE, 5.56MM, M16A4 W/E, PN 12973001

NSN 1005-01-383-2872 (EIC:4F9);

CARBINE, 5.56MM, M4, PN 9390000

NSN 1005-01-231-0973 (EIC:4FJ);

CARBINE, 5.56MM, M4A1, PN 12972700

NSN 1005-01-382-0953 (EIC:4GC)

*Supersedes TM 9-1005-319-23&P, 11W3-5-5-42, and SW370-BU-MMI-010. 01 May 1991, including all changes.

DISCLOSURE NOTICE - This information is furnished upon the condition that it will not be released to another nation without

the specific authority of the Department of the Army of the United States; that it will be used for military purposes only; that

individual or corporate rights originating in the information, whether patented or not, will be respected; that the recipient will

report promptly to the United States any known or suspected compromise; and that the information will be provided

substantially the same degree of security afforded it by the Department of Defense of the United States. Also, regardless of

any other markings on the document, it will not be downgraded or declassified without written approval of the originating United

States agency.

DISTRIBUTION STATEMENT C

- Distribution authorized to U.S. Government agencies and their contractors. This publication

is required for administration and operational purposes, as determined 26 October 2005. ARMY ONLY: Other requests for

this document shall be referred to U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-LC-LMPP/TECH PUBS,

1 Rock Island Arsenal, Rock Island, IL 61299-7630. AIR FORCE ONLY: Other requests for this document must be referred to

542 CBSS/GBHDE, Robins AFB, GA 31098-1813.

WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C.,

Sec 2751 et seq) or the Export Administration Act of 1979, as amended, Title 50A, U.S.C., App. Violations of these export

laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DOD Directive 5230.25.

DESTRUCTION NOTICE

- Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

DEPARTMENTS OF THE ARMY, AIR FORCE, AND NAVY

NOVEMBER 2008

Summary of content (436 pages)

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*ARMY TM 9-1005-319-23&P AIR FORCE TO 11W3-5-5-42 NAVY SW370-BU-MMI-010 TECHNICAL MANUAL FIELD MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST) FOR RIFLE, 5.56MM, M16A2 W/E, PN 9349000 NSN 1005-01-128-9936 (EIC:4GM); RIFLE, 5.56MM, M16A3 W/E, PN 12012000 NSN 1005-01-357-5112; RIFLE, 5.56MM, M16A4 W/E, PN 12973001 NSN 1005-01-383-2872 (EIC:4F9); CARBINE, 5.56MM, M4, PN 9390000 NSN 1005-01-231-0973 (EIC:4FJ); CARBINE, 5.
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TM 9-1005-319-23&P WARNING SUMMARY This warning summary contains general safety warning and hazardous materials warnings that must be understood and applied during operation and maintenance of this equipment. All warnings in this technical manual pertain to both the rifles and the carbines unless otherwise specified. Failure to observe these precautions could result in serious injury or death to personnel.
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TM 9-1005-319-23&P WARNING SUMMARY - Continued GENERAL SAFETY WARNINGS DESCRIPTION - Continued WARNING EXPLOSION Do not keep live ammunition near work area. If the weapon fails function tests, perform required maintenance. Continued use of weapon could result in injury to, or death of, personnel. All M16A2, M16A3, M16A4 rifles and M4/M4A1 carbines must be inspected and gaged at least once annually for safety and serviceability. Initial gaging is required 1 year from receipt of the weapons.
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TM 9-1005-319-23&P WARNING SUMMARY - Continued EXPLANATION OF HAZARDOUS MATERIALS ICONS CHEMICAL - drops of liquid on hand shows that the material will cause burns or irritation to human skin or tissue. EYE PROTECTION - person with goggles shows that the material will injure the eyes. FIRE - flame shows that a material may ignite and cause burns. VAPOR - human figure in a cloud shows that material vapors present danger to life or health.
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TM 9-1005-319-23&P WARNING SUMMARY - Continued HAZARDOUS MATERIALS DESCRIPTION - Continued WARNING CARBON REMOVING COMPOUND When using carbon removing compound, avoid skin contact. If carbon removing compound comes in contact with the skin, wash thoroughly with running water. Using a good lanolin base cream after exposure to the compound is helpful. The use of gloves and protective equipment is required.
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TM 9-1005-319-23&P LIST OF EFFECTIVE PAGES/WORK PACKAGES NOTE: This manual supersedes TM 9-1005-319-23&P, 11W3-5-5-42, and SW370-BU-MMI-010, 01 May 1991. Zero in the "Change No." column indicates an original page or work package. Date of issue for the original manual is: Original 28 November 2008 TOTAL NUMBER OF PAGES FOR FRONT AND REAR MATTER IS 40 AND TOTAL NUMBER OF WORK PACKAGES IS 45 CONSISTING OF THE FOLLOWING: Page/WP No. Change No. Front Cover.................................
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*ARMY TM 9-1005-319-23&P AIR FORCE TO 11W3-5-5-42 NAVY SW370-BU-MMI-010 HEADQUARTERS DEPARTMENTS OF THE ARMY, AIR FORCE, AND NAVY WASHINGTON, D.C., 28 November 2008 TECHNICAL MANUAL FIELD MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST) FOR RIFLE, 5.56MM, M16A2 W/E, PN 9349000 NSN 1005-01-128-9936 (EIC:4GM); RIFLE, 5.56MM, M16A3 W/E, PN 12012000 NSN 1005-01-357-5112; RIFLE, 5.56MM, M16A4 W/E, PN 12973001 NSN 1005-01-383-2872 (EIC:4F9); CARBINE, 5.
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TM 9-1005-319-23&P DISCLOSURE NOTICE - This information is furnished upon the condition that it will not be released to another nation without the specific authority of the Department of the Army of the United States; that it will be used for military purposes only; that individual or corporate rights originating in the information, whether patented or not, will be respected; that the recipient will report promptly to the United States any known or suspected compromise; and that the information will be pro
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 2 — FIELD TROUBLESHOOTING PROCEDURES (Continued) Figure 11. Locking Lugs Inspection..........................................................0005-8 Figure 12. Cartridge Extractor Inspection ...............................................0005-8 Figure 13. Cartridge Ejector Inspection ...................................................0005-9 Figure 14. Trigger and Hammer Inspection...........................................
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 3 — FIELD MAINTENANCE INSTRUCTIONS (Continued) Figure 17. Final Movement of Key and Bolt Carrier Assembly............0009-14 Figure 18. Third Rotation of Burst Cam ................................................0009-14 Figure 19. Rotation into Stop Notch .......................................................0009-15 Figure 20. Completion of Firing ..............................................................
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 3 — FIELD MAINTENANCE INSTRUCTIONS (Continued) Upper Receiver and Barrel Assembly (M16A2, M16A3) 9349050, (M16A4) 12973010, and (M4, M4A1) 12972680 Maintenance ............................................ Figure 1. Removal of Upper Handguard Assembly (M16A2)................0015-2 Figure 2. Removal of Lower Handguard Assembly (M16A2)................0015-3 Figure 3. Removal of Upper and Lower Handguards (M16A3/M16A4/M4/M4A1)...
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 3 — FIELD MAINTENANCE INSTRUCTIONS (Continued) Barrel Assembly (M16A2, M16A3) 9349124, (M16A4) 12598107, Replacement Barrel and Front Sight Assembly (M4) 9390007, (M4A1) 12991851 Maintenance ............................................................................................. Figure 1. Removal/Installation of Front Sight Post...............................0016-2 Figure 2.
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 3 — FIELD MAINTENANCE INSTRUCTIONS (Continued) Figure 5. Removal of Pivot Pin................................................................0021-4 Figure 6. Removal of Detent and Helical Spring ...................................0021-5 Figure 7. Removal of Buffer Assembly and Action Spring....................0021-6 Figure 8. Removal of Bolt Catch .............................................................0021-7 Figure 9.
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 3 — FIELD MAINTENANCE INSTRUCTIONS (Continued) Figure 8. Torquing Lower Receiver Extension (Rifle) ...........................0025-7 Figure 9. Installation of Lower Receiver Extension (Carbine) .............0025-8 Figure 10. Installation of Trigger Guard..................................................0025-9 Adapter Rail Cover Assemblies Maintenance..........................................................................
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 4 — AUXILIARY EQUIPMENT MAINTENANCE INSTRUCTIONS (Continued) Figure 8. Assembling Sling to Rear Sling Adapter................................0034-4 Figure 9. Attaching Sling to Quick Release Swivel ...............................0034-5 Figure 10. Attaching Swivel to Lanyard ..................................................0034-5 Figure 11. Securing Swivel and Lanyard .................................................
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TM 9-1005-319-23&P TABLE OF CONTENTS - Continued WP Sequence No. Page No. CHAPTER 5 — PARTS INFORMATION (Continued) Figure 12. Upper Receiver Assembly (M16A2) 9349062, (M16A3, M16A4) 12973011, and (M4, M4A1) 12972675....................0039-26 Figure 13. Forward Assist Assembly 9349086 .......................................0039-29 Figure 14. Rear Sight Assembly (M16A2) 9349072 and (M16A3, M16A4, M4, M4A1) 12951026 ...............................0039-30 Figure 15.
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TM 9-1005-319-23&P HOW TO USE THIS MANUAL Read this manual carefully before performing required maintenance. Inspection/Maintenance and Repair procedures will be found in this manual. General 1. All references are to work packages. Reference to maintenance procedures is to the work package where the repair appears. 2. Illustrations for the maintenance procedures show only the parts affected by the operation being performed. 3. Whenever the male gender is mentioned in the manual (i.e.
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TM 9-1005-319-23&P CHAPTER 1 GENERAL INFORMATION, EQUIPMENT DESCRIPTION, AND THEORY OF OPERATION FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
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TM 9-1005-319-23&P 0001 FIELD MAINTENANCE GENERAL INFORMATION F R O N T S I G H T A S S E M B L Y R E A R S I G H T A S S E M B L Y C H A R G I N G H A N D G U A R D H A N D L E E J E C T I O N P O R T C O V E R B A Y O N E T L U G S L I N G F O R W A R D T R I G G E R A S S I S T A S S E M B L Y L O W E R R E C E I V E R A N D B U T T S T O C K A S S E M B L Y M A G A Z I N E R E L E A S E B U T T O N R I G H T S I D E "S Q U A R E " F R O N T S I G H T P O S T U P B O L T C A T C H F R O
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TM 9-1005-319-23&P 0001 F R O N T S I G H T A S S E M B L Y B A C K -U P I R O N C H A R G I N G S I G H T M 5 A D A P T E R R A I L S Y S T E M H A N D L E E J E C T I O N P O R T C O V E R F O R W A R D S L I N G T R I G G E R A S S I S T A S S E M B L Y L O W E R R E C E I V E R A N D B U T T S T O C K A S S E M B L Y R I G H T B A Y O N E T L U G M A G A Z I N E R E L E A S E B U T T O N S I D E "S Q U A R E " F R O N T S I G H T P O S T U P B O L T C A T C H F R O N T S I G H T C O M
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TM 9-1005-319-23&P 0001 M 4 A D A P T E R R A I L S Y S T E M B A C K -U P I R O N S I G H T F R O N T S I G H T A S S E M B L Y S P E N T B R A S S D E F L E C T O R C H A R G I N G H A N D L E E J E C T I O N P O R T C O V E R F O R W A R D A S S I S T A S S E M B L Y M A G A Z I N E T R I G G E R B A Y O N E T L U G S L I N G S W I V E L M A G A Z I N E R E L E A S E B U T T O N R I G H T S I D E "S Q U A R E " F R O N T S I G H T P O S T B O L T C A T C H S L I P R I N G C O M P E N S A T
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TM 9-1005-319-23&P 0001 SCOPE Type of Manual Field maintenance manual. Model Numbers and Equipment Names M16A2, M16A3, and M16A4 Rifles and M4 and M4A1 Carbines. Purpose of Equipment The purpose of the rifles and carbines is to provide personnel with an offensive/defensive capability to engage targets with small arms fire.
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TM 9-1005-319-23&P 0001 CORROSION PREVENTION AND CONTROL (CPC) Corrosion Prevention and Control (CPC) of Army materiel is a continuing concern. It is important that any corrosion problems with this item be reported so that the problem can be corrected and improvements can be made to prevent the problem in future items. While corrosion is typically associated with rusting of metals, it can also include deterioration of other materials such as rubber and plastic.
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TM 9-1005-319-23&P NOMENCLATURE CROSS-REFERENCE LIST Common Name Official Nomenclature Action Spring Automatic Sear Ball Bearing Bolt Assembly Bolt Catch Spring Bolt Carrier Key Tool Burst Disconnector Cam Clutch Spring Carbine Charging Handle Assembly Disconnector Spring Ejector Spring Extractor Spring Assembly Hammer Spring Lower Receiver Extension Magazine Magazine Catch Spring Peel Washer Pistol Grip Pivot Pin Detent Rifle Rifle Barrel Assembly Selector Lever Semiautomatic Disconnector Sling Trigger
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TM 9-1005-319-23&P 0001 QUALITY OF MATERIAL Material used for replacement, repair, or modification must meet the requirements of this TM 9-1005-31923&P. If quality of material requirements is not stated in this TM 9-1005-319-23&P, the material must meet the requirements of the drawings, standards, specifications, or approved engineering change proposals applicable to the subject equipment.
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TM 9-1005-319-23&P 0002 FIELD MAINTENANCE EQUIPMENT DESCRIPTION AND DATA EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES Characteristics The M16 series rifles and M4 series carbines are lightweight weapons. They are air-cooled, gas-operated, and magazine-fed. They have a semiautomatic, burst fire capacity, or full automatic fire. Capabilities and Features The rifles and carbines provide personnel with an offensive/defensive capability to engage targets with direct small arms fire.
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TM 9-1005-319-23&P 0002 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS 1 2 3 1 2 4 7 5 6 8 M 1 6 A 2 7 1 2 4 5 6 9 M 4 /M 4 A 1 4 5 6 M 1 6 A 3 /M 1 6 A 4 1 v s 0 0 4 Figure 1. Major Components of Rifles and Carbines.
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TM 9-1005-319-23&P 0002 Charging Handle Assembly (1) This assembly provides a means of charging the weapon. Bolt Carrier Assembly (2) The bolt carrier assembly carries bolt assembly to chamber and fires the weapon. It contains the firing pin, cartridge extractor, bolt assembly, cartridge ejector, and bolt cam pin.
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TM 9-1005-319-23&P 0002 EQUIPMENT DATA PHYSICAL CHARACTERISTICS Weight: Carbine, M4, without magazine and sling ............................................................................... 6.44 lb (2.92 kg) Carbine, M4A1, without magazine and sling .......................................................................... 7.81 lb (3.54 kg) Rifle, M16A2, without magazine and sling.............................................................................. 7.50 lb (3.
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TM 9-1005-319-23&P 0002 Maximum rate of fire: Semiautomatic................................................................................................................................. 45 rds/m Burst ................................................................................................................................................ 90 rds/m Sustained rate of fire .............................................................................................................
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TM 9-1005-319-23&P 0003 FIELD MAINTENANCE THEORY OF OPERATION GENERAL The 5.56mm M16A2, M16A3, M16A4 rifle and the M4/M4A1 carbine is gas-operated. It fires in the semiautomatic, full automatic, or burst mode. The weapon has positive locking of the bolt. The firing pin is part of the bolt carrier assembly and cannot strike the primer until the bolt assembly is fully locked.
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TM 9-1005-319-23&P 0003 PRINCIPLES OF OPERATION 1 2 3 1 2 4 7 5 6 8 M 1 6 A 2 7 1 2 5 6 9 5 4 M 4 /M 4 A 1 4 6 M 1 6 A 3 /M 1 6 A 4 1 v s 0 0 5 Figure 1. Operation of Rifles and Carbines.
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TM 9-1005-319-23&P 0003 Charging Handle Assembly (1) This assembly provides initial charging of the weapon. The handle latch locks the charging handle assembly in the forward position during sustained fire to prevent injury to the operator. Bolt Carrier Assembly (2) This assembly provides stripping, chambering, locking, firing, extraction, and ejection of cartridges using the drive springs and projectile propelling gases for power.
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TM 9-1005-319-23&P CHAPTER 2 FIELD TROUBLESHOOTING PROCEDURES FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
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TM 9-1005-319-23&P 0004 FIELD MAINTENANCE TROUBLESHOOTING INDEX GENERAL Field level troubleshooting information is provided for locating and correcting most of the operating troubles which may develop in the M16A2, M16A3, M16A4 rifle, M4/M4A1 carbine. Each malfunction for the individual part or assembly is followed by a list of tests or inspections which will help you to determine the corrective actions in the order listed.
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TM 9-1005-319-23&P FIELD MAINTENANCE TROUBLESHOOTING PROCEDURES M16 SERIES RIFLE/M4 SERIES CARBINE INITIAL SETUP: Tools and Special Tools Shop Set, Small Arms: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Materials/Parts Bore small arms cleaning brush (WP 0045, item 4) Carbon removing compound (WP 0045, item 8) Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Gloves (WP 0045, item 17) Pipe cleaner (WP 0045, item 11) Reflector tool (WP 0039, Figure 23, item 3) References TM 9-1005-319-1
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. FAILURE OF MAGAZINE TO LOCK IN RIFLE/CARBINE - Continued. Step 2. Inspect for defective magazine catch spring (2). Replace magazine catch spring (WP 0021). Step 3. Inspect for worn or broken magazine catch (1). Replace magazine catch (WP 0021). 2 1 1 v s 0 0 6 Figure 1. Magazine Catch Inspection. 2. FAILURE TO FEED. Step 1.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2 1 1 v s 0 0 6 Figure 2. Magazine Catch and Spring Inspection. 3. FAILURE TO CHAMBER. Step 1. Inspect for weak or broken action spring (3). RIFLE ONLY: Free length should be 11 3/4 in. (29.85 cm) minimum to 13 1/2 in. (34.29 cm) maximum. CARBINE ONLY: Free length should be 10 1/16 in. (25.56 cm) minimum to 11 1/4 in. (28.58 cm) maximum. Replace action spring (WP 0021).
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. FAILURE TO LOCK. Step 1. Inspect for missing bolt cam pin (4). Replace bolt cam pin (WP 0011). Step 2. Inspect for damaged bolt carrier key (5). Repair slightly dented bolt carrier key. Replace more seriously damaged bolt carrier key (WP 0013). Step 3. Inspect for loose screws (6) on bolt carrier key (5). a.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 5. Inspect for bent gas tube (8). a. Adjust to original configuration by bending gas tube in area of handguards. b. Replace gas tube and check alignment (WP 0015). 8 1 v s 0 1 0 Figure 6. Gas Tube. Step 6. Inspect for weak or broken action spring (3). RIFLE ONLY: Free length should be 11 3/4 in. (29.85 cm) minimum to 13 1/2 in. (34.29 cm) maximum.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 5. FAILURE TO FIRE - Continued. Step 2. Inspect for broken hammer (10). Replace hammer (WP 0021 and WP 0023). Step 3. Inspect for broken hammer spring (9). Replace hammer spring (WP 0021 and WP 0023). Step 4. Check for improper assembly of hammer spring (9). Assemble properly (WP 0023). Step 5.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 6. Inspect for broken, defective, or missing firing pin retaining pin (13). Replace firing pin retaining pin (WP 0011). 1 3 1 v s 0 1 2 Figure 9. Firing Pin Retaining Pin Inspection. Step 7. Determine if selector lever (14) is frozen on SAFE position. Disassemble and clean (WP 0021). Step 8.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 6. FAILURE TO UNLOCK. Step 1. Inspect for burred locking lugs on bolt assembly (16). Remove burrs. Step 2. Inspect for burred lugs (17) on barrel extension. Remove burrs. 1 6 1 7 1 v s 0 1 4 Figure 11. Locking Lugs Inspection. Step 3. Check for short recoil. See Malfunction 10. 7. FAILURE TO EXTRACT. Step 1.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2. Inspect badly pitted chamber with reflector tool (WP 0039, Figure 23, item 3). Replace barrel assembly if chamber is badly pitted (WP 0015). Step 3. Check for short recoil. See Malfunction 10. 8. FAILURE TO EJECT. Step 1. Inspect for broken cartridge ejector (22). Replace cartridge ejector (WP 0012). Step 2. Determine if cartridge ejector (22) is stuck in bolt body (20).
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 9. FAILURE TO COCK. Step 1. Inspect for worn or broken trigger nose (24) or trigger spring (25). Replace trigger (23) or defective trigger spring (WP 0024). Step 2. Inspect for worn or broken hammer trigger notch (28). Replace hammer (10) (WP 0021 and WP 0023). Step 3. Inspect for worn or broken hammer disconnector hook (27).
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 7. Inspect for worn, broken, or missing automatic sear (33). Replace automatic sear (WP 0021). Step 8. Inspect for weak or broken automatic sear spring (32). Replace automatic sear (33) (WP 0021). Step 9. Determine if long leg (31) of automatic sear spring (32) is incorrectly assembled in receiver. Remove automatic sear (33) and install correctly (WP 0021). Step 10.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 10. SHORT RECOIL. Step 1. Inspect for broken or damaged action spring (3). Replace action spring (WP 0021). Step 2. Inspect for unlubricated or dirty action spring (3) and receiver extension. Clean and lubricate. 3 1 v s 0 0 7 Figure 16. Action Spring Replacement. Step 3.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 4. Inspect for carbon build-up or foreign matter in narrow passage of bolt carrier key (5). Clean with CLP (WP 0045, item 9) and a worn bore brush. 5 1 v s 0 2 0 Figure 18. Bolt Carrier Key Inspection. Step 5. Inspect for broken or bent gas tube (8). Adjust by bending in area of handguards or replace gas tube (WP 0015). Step 6.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 10. SHORT RECOIL - Continued. WARNING CARBON REMOVING COMPOUND Step 8. Inspect for carbon build-up in barrel gas port (38). Remove carbon build-up by soaking barrel in carbon removing compound (WP 0045, item 8). Use rubber gloves (WP 0045, item 17) with carbon removing compound. Use a bore small arms cleaning brush (WP 0045, item 4).
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 3. (For elevation) Inspect for defective front sight (40). Remove front sight post (41), front sight detent (42), and helical spring (43). If damaged, replace. Step 4. (For elevation) Inspect for defective rear sight (39). Repair as required (WP 0019). 3 9 4 1 4 2 4 3 4 0 4 4 Figure 21. Front Sight and Rear Sight Inspection.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 12. FAILURE TO CYCLE WITH SELECTOR LEVER SET ON BURST (M16A2/M16A4 AND M4 ONLY). Step 1. Inspect for broken automatic sear (33) or automatic sear spring (32). Replace automatic sear (WP 0021). Step 2. Inspect for faulty selector lever (14). Replace selector lever (WP 0021). Step 3. Inspect for broken tooth on burst cam (12).
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION NOTE When hammer is rotated back to cocked position, burst cam should rotate to allow burst disconnector to latch in next notch. Step 6. Determine if burst cam spring (11) fails to "clutch" and burst cam (12) fails to rotate back with hammer (10). Replace burst cam spring. If problem continues, replace hammer and burst cam (WP 0023). Step 7.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 13. FAILURE TO CYCLE WITH SELECTOR LEVER SET ON AUTO (M16A3 AND M4A1 ONLY). Step 1. Inspect for broken automatic sear (33) or automatic sear spring (32). Replace automatic sear (WP 0021). Step 2. Inspect for faulty selector lever (14). Replace selector lever (WP 0021). 1 4 3 2 3 3 1 v s 0 2 6 Figure 24.
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 3 0 2 7 2 8 3 0 1 0 1 0 M 1 6 A 2 a n d M 4 M 1 6 A 3 a n d M 4 A 1 1 v s 0 2 7 Figure 25. Semiautomatic Disconnector and Hammer Inspection. Step 5. Inspect for worn or broken trigger (23) (searing portion). Replace trigger (WP 0021). Step 6. Inspect for worn hammer or trigger pin hole. Gage hammer pin hole (45) and trigger pin hole (46) (WP 0009).
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 15. FIRES WITH SELECTOR LEVER ON SAFE OR WHEN TRIGGER IS RELEASED WITH SELECTOR LEVER ON SEMI. Step 1. Inspect for defective selector lever (14). Replace selector lever (WP 0021). Step 2. Inspect for worn or broken rear portion of trigger (23). Replace trigger (WP 0021).
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TM 9-1005-319-23&P 0005 Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 17. BOLT ASSEMBLY FAILS TO LOCK TO REAR AFTER FIRING LAST ROUND. Step 1. Inspect magazine follower (50) for wear, breaks, or separation from magazine spring (49). Replace magazine. Step 2. Determine if magazine spring (49) is weak or broken. Replace magazine. Step 3. Inspect magazine feeder lips (48) for bends or breaks. Replace magazine. Step 4.
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TM 9-1005-319-23&P 0005 M16 SERIES RIFLE/M4 SERIES CARBINE - Continued Table 1. Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 17. BOLT ASSEMBLY FAILS TO LOCK TO REAR AFTER FIRING LAST ROUND - Continued. Step 5. Inspect for broken bolt catch (51). Replace bolt catch (WP 0021). Step 6. Inspect for weak or broken bolt catch spring (52). Replace bolt catch spring (WP 0021). Step 7. Inspect for restricted movement of bolt catch (51). Disassemble and clean.
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TM 9-1005-319-23&P CHAPTER 3 FIELD MAINTENANCE INSTRUCTIONS FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
PAGE 68
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TM 9-1005-319-23&P 0006 FIELD MAINTENANCE SERVICE UPON RECEIPT GENERAL When a new or reconditioned weapon is first received, it is the responsibility of the officer-in-charge to determine whether the weapon has been properly prepared for service by supplying organization and whether it is in proper condition to perform its mission. SERVICE UPON RECEIPT OF MATERIEL Unpacking WARNING Before starting an inspection, be sure to clear the weapon. Do not pull the trigger until the weapon has been cleared.
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TM 9-1005-319-23&P INSTALLATION INSTRUCTIONS Refer to TM 9-1005-319-10 to assemble weapon and to perform function check. Check the magazine for positive retention and functioning of bolt catch.
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TM 9-1005-319-23&P 0007 FIELD MAINTENANCE PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) INTRODUCTION GENERAL, EXPLANATION OF COLUMN ENTRIES GENERAL a. Preventive Maintenance Checks and Services (PMCS) (WP 0008) must be performed by field maintenance personnel to be sure the M16 series rifle or M4 series carbine is in good operating condition and ready for its primary mission. b.
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TM 9-1005-319-23&P FIELD MAINTENANCE PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS PMCS PROCEDURES, LUBRICATION INSTRUCTIONS INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Abrasive cloth (WP 0045, item 13) Cleaner, lubricant, and preservative (CLP) (WP 0045, item 10) Dry cleaning solvent (WP 0045, item 15) Gloves (WP 0045, item 17) Rifle bore cleaning compound (RBC) (WP 0045, item 12) Solid film lubricant (WP 0045, item 20
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued NOTE An inactive weapon is a weapon which has been stored in an arms room for a period of 90 days without use. The weapon may or may not have been assigned to an individual. Inactive weapons shall receive quarterly PMCS unless inspection reveals more frequent servicing is necessary. Normal cleaning (PMCS) of an inactive weapon will be performed every 90 days.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Procedure c. Reassemble magazine and check for binding during operation of follower (4). Replace magazine if follower binds. Equipment Not Ready/Available If: c. Follower binds.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 2 (Cont) Quarterly (Cont) Item To Be Checked or Serviced ManHour Equipment Not Ready/Available If: Procedure Charging Handle Assembly and Selector Lever (Cont) a. Pull charging handle (5) to rear. a. Charging Check that chamber is clear. handle does not Let bolt carrier assembly (6) lock in place close.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Selector Lever SEMI Procedure Equipment Not Ready/Available If: c. Place selector lever (7) in SEMI c. Hammer does position. Pull trigger (8). not fall. Hammer falls. NOTE For the purpose of the following test, "slow" is defined as 1/4 to 1/2 the normal rate of trigger release. d.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 2 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Procedure Equipment Not Ready/Available If: Charging Handle Assembly and Selector Lever (Cont) M16A3 and M4A1 Only h. Place selector lever (7) in AUTO h. Hammer does position. Charge weapon and not fall. squeeze trigger (8). Hammer should fall.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. 3 Interval Quarterly ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure Upper Receiver and Barrel Assembly (Handguard Assemblies) CAUTION Do not use screwdriver or any other tool when removing handguard assemblies; use of tools may damage handguard assemblies and/or slip.
PAGE 80
TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 3 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure Upper Receiver and Barrel Assembly (Handguard Assemblies) (Cont) M16A3, M16A4, M4, and M4A1 Only b. Remove lower handguard (10) b.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. 4 Interval Quarterly ManHour Item To Be Checked or Serviced Procedure Upper Receiver and Barrel Assembly (Serviceability Check) Equipment Not Ready/Available If: WARNING DRY CLEANING SOLVENT CAUTION Damage may occur if excessive force is used to release takedown pin or pivot pin. Use hand pressure ONLY. a.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 4 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Procedure Equipment Not Ready/Available If: Upper Receiver and b. Check gas tube (15), forward b. Gas tube, Barrel Assembly assist assembly (16), and rear forward assist (Serviceability sight assembly (17) for damage.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure NOTE If front or rear sight is moved, return to original position. e. Check front sight post, detent, and spring (18) for damage and corrosion. Clean and lubricate. Check charging handle (5) and ejection port cover (19) for defects and proper function.
PAGE 84
TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 4 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Procedure Upper Receiver and Barrel Assembly (Serviceability Check) (Cont) Equipment Not Ready/Available If: CAUTION Do not use a wire brush to roughen surfaces.
PAGE 85
TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Procedure WARNING DRY CLEANING SOLVENT WARNING SOLID FILM LUBRICANT h. If scratched or worn shiny in spots, disassemble and remove all lubricant from surface with dry cleaning solvent (WP 0045, item 15). Wear rubber gloves (WP 0045, item 17) and use a wash pan (WP 0045, item 26) to apply solvent.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 4 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure Upper Receiver and i. Hold barrel (13) at 40-degree i. Adjustment Barrel Assembly angle (muzzle down). Pull does not correct (Serviceability charging handle (5) to rear. the malfunction.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Procedure Equipment Not Ready/Available If: M16A3/M16A4 and M4/M4A1 Only j. Inspect back-up iron sight (BUIS) (25) and mounting surface (26) of upper receiver (14) for damage. If BUIS is missing or cannot be correctly mounted, repair as authorized. j.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. 5 Interval Quarterly ManHour Item To Be Checked or Serviced Procedure Key and Bolt Carrier Assembly and Bolt Assembly (Serviceability Check) Equipment Not Ready/Available If: WARNING Unless performed by qualified maintenance personnel, do not interchange bolt assemblies from one weapon to another.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure 3 2 2 3 3 3 2 7 3 0 2 2 3 1 2 9 2 8 1 v s 0 4 3 c. Check cartridge extractor (34), extractor spring assembly (35), cartridge ejector (36), and ejector spring (37) for dirt and serviceability. If dirty, clean, lubricate, and assemble.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. 6 Interval Quarterly ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure Lower Receiver and a. Remove buffer assembly (40) Buttstock Assembly and action spring (41). Check (Serviceability buffer assembly for cracks. Check) Check action spring for kinks and free length.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Procedure Equipment Not Ready/Available If: b. Remove pistol grip screw (42), b. Components are lockwasher (43), pistol grip (44), defective/ helical spring (45), safety detent damaged. (46), pivot pin (47), pivot pin detent (48), and helical spring (49). Clean and lubricate metal components.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 6 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure Lower Receiver and Buttstock Assembly (Serviceability Check) (Cont) Rifle Only c. Disengage takedown pin (50) c. Components are and pull out; push back in to redefective/ engage takedown pin (an damaged.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Procedure Rifle Only f. Cracks in the critical area at the front end of buttstock are not acceptable. Under the following conditions, hairline cracks (no chipped away material allowed) originating from the buttplate end of the buttstock are acceptable. Equipment Not Ready/Available If: f.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 6 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Procedure Equipment Not Ready/Available If: Rifle Only Lower Receiver and Buttstock Assembly (Serviceability Check) (Cont) NOTE A small amount of side-toside, up-and-down, or rotational movement of buttstock assembly is acceptable. g.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure (3) If buttplate is cracked in excess of 0.25 in. (0.64 cm) in length and extends through buttplate (57), repair. SH - Crack in excess of 0.25 in. extends through buttplate.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval 6 (Cont) Quarterly (Cont) ManHour Item To Be Checked or Serviced Procedure Lower Receiver and Buttstock Assembly (Serviceability Check) (Cont) Equipment Not Ready/Available If: Carbine Only i. Extend buttstock assembly (58).
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. Interval ManHour Item To Be Checked or Serviced Equipment Not Ready/Available If: Procedure 5 8 6 1 5 9 6 3 6 0 6 4 6 2 1 v s 0 5 0 All Weapons n. Function check magazine catch (65) and bolt catch (66). n. Magazine catch or bolt catch is defective.
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TM 9-1005-319-23&P 0008 PMCS PROCEDURES - Continued Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No.
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TM 9-1005-319-23&P 0008 Table 1. Preventive Maintenance Checks and Services for M16 Series Rifles and M4 Series Carbines - Continued. Item No. 8 Interval ManHour Quarterly Item To Be Checked or Serviced Annual Safety and Serviceability Inspection and Gaging Procedure Check to ensure annual safety and serviceability inspection and gaging has been done and that the next gaging and inspection is scheduled. Equipment Not Ready/Available If: Annual gaging has not been performed.
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PAGE 101
TM 9-1005-319-23&P FIELD MAINTENANCE RIFLE, 5.56MM (M16A2) 9349000; RIFLE, 5.56MM (M16A3) 12012000; RIFLE, 5.56MM (M16A4) 12973001; CARBINE, 5.56MM (M4) 9390000; AND CARBINE, 5.
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TM 9-1005-319-23&P 0009 DISASSEMBLY WARNING Before starting an inspection, be sure to clear the weapon. Do not pull the trigger until the weapon has been cleared. Inspect the chamber to ensure that it is empty and no ammunition is in position to be chambered. 2 1 3 7 7 2 2 3 3 1 1 8 6 4 6 5 8 6 4 M 4 /M 4 A 1 C A R B I N E M 1 6 A 2 R I F L E 4 5 5 M 1 6 A 3 /M 1 6 A 4 R I F L E 1 v s 0 5 2 Figure 1. Major Components of Rifles and Carbines.
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TM 9-1005-319-23&P 0009 AIR FORCE ONLY: The only permissible coatings or coverings authorized for Air Force owned or controlled weapons are: Receiver: Color hardcoat anodizing applied by qualified Depot personnel only; Any steel components: Phosphate coat applied by qualified Depot personnel only; Touchup of small damaged or shiny areas: SFL applied by qualified Combat Arms personnel only. Painting or otherwise camouflaging Air Force weapons is not authorized.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued 5. Functionally inspect key and bolt carrier assembly and gas tube alignment. Refer to TM 9-1005-319-10 and use the following procedures: a. Disengage the takedown pin and open the receiver. b. Remove bolt carrier assembly. c. Remove bolt assembly from bolt carrier assembly. d. Insert key and bolt carrier assembly into upper receiver and barrel assembly. The bolt assembly must not be installed while performing test. e.
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TM 9-1005-319-23&P (5) Tighten index screw and remove wrench. (6) Check for proper setting. 0009 ALL WEAPONS 7. Make a functional check on an assembled weapon with selector lever in SAFE, SEMI, and BURST/AUTO positions. Any portion of this check may be used alone to determine the operational condition of any specific firing position selected. a. Remove magazine if installed. Pull charging handle assembly to rear. Check that chamber is clear. Let bolt and bolt carrier assembly close.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued M16A3 and M4A1 ONLY i. Place selector lever in AUTO position. Charge weapon and pull trigger. Hammer should fall. j. Hold trigger to the rear, charge weapon, and release trigger. Pull trigger. Hammer should not fall. AUTO sear should have released hammer as the bolt closed. ALL WEAPONS k. 8. 9. With hammer in forward position, attempt to place the selector lever in the SAFE position.
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TM 9-1005-319-23&P 3 L B (1 3 6 1 G ) 0009 2 L B (9 0 7 G ) 2 L B 8 O Z (1 1 3 4 G ) 2 L B 8 O Z (1 1 3 4 G ) 1 L B 8 O Z (6 8 0 G ) 1 v s 0 5 3 Figure 2. Trigger Pull Test. b. Release the trigger. Place the selector lever in SEMI position. Hold the weapon in the vertical position. Using trigger pull measuring fixture, P/N 7274758, add weights until hammer trips. Determine weight applied. c. Hammer must not trip when 5.5 lb (2.49 kg) have been applied; hammer must trip on applying 9.5 lb (4.
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TM 9-1005-319-23&P TEST AND INSPECTION - Continued 13. Check barrel straightness using barrel straightness gage P/N 8448202. See WP 0015. NOTE Review step 14 only if problems are encountered during selector lever tests. First become familiar with the functioning of the firing mechanism, especially when in the SAFE and SEMI positions. Also understand the role that the automatic sear plays when firing in the BURST position. Functioning of the mechanism is explained below in a step by step manner.
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TM 9-1005-319-23&P 0009 F R O N T H O O K S T O P N O T C H 1 v s 0 5 5 Figure 4. Firing of First Round. c. Trigger is pulled. d. Trigger nose drops and hammer falls firing the FIRST ROUND. e. Front hook of burst disconnector holds burst cam in place as hammer falls. NOTE Anytime the hammer falls forward, the clutch spring releases the burst cam and allows the front hook of the burst disconnector to keep it in place. 1 v s 0 5 6 Figure 5. Movement of Key and Bolt Carrier Assembly. f.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued 1 v s 0 5 7 Figure 6. First Rotation of Burst Cam. g. The clutch spring of the burst cam clutches the burst cam and causes it to rotate one notch as the hammer is forced back. 1 v s 0 5 8 Figure 7. Action of Automatic Sear. h. When hammer is fully to the rear, the automatic sear catches it. 1 v s 0 5 9 Figure 8. Burst Disconnector in Second Notch. i. The front hook of the burst disconnector is now fully in the second notch.
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TM 9-1005-319-23&P 0009 1 v s 0 6 0 Figure 9. Forward Travel of Key and Bolt Carrier Assembly. j. As the key and bolt carrier assembly travels forward, the automatic sear releases the hammer and the hammer falls. 1 v s 0 6 1 Figure 10. Firing of Second Round. k. When the hammer falls, the SECOND ROUND is fired.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued 1 v s 0 6 2 Figure 11. Rearward Movement of Key and Bolt Carrier Assembly. l. As the key and bolt carrier assembly moves to the rear, the hammer is forced back to the rear. 1 v s 0 6 3 Figure 12. Second Rotation of Burst Cam. m. The clutch spring of the burst cam clutches against the burst cam and causes it to rotate one notch as the hammer is forced back. 1 v s 0 6 4 Figure 13. Second Round Action of Automatic Sear. n.
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TM 9-1005-319-23&P 0009 1 v s 0 6 5 Figure 14. Burst Disconnector in Third Notch. o. The front hook of the burst disconnector is now fully in the third notch. 1 v s 0 6 0 Figure 15. Release of Hammer Assembly. p. As the key and bolt carrier assembly travels forward, the automatic sear releases the hammer and the hammer falls. 1 v s 0 6 6 Figure 16. Firing of Third Round. q. When the hammer falls, the THIRD ROUND is fired.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued 1 v s 0 6 2 Figure 17. Final Movement of Key and Bolt Carrier Assembly. r. As the key and bolt carrier assembly moves to the rear, the hammer is forced back to the rear. 1 v s 0 6 7 Figure 18. Third Rotation of Burst Cam. s. The clutch spring of the burst cam clutches against the burst cam and causes it to rotate one notch as the hammer is forced back.
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TM 9-1005-319-23&P 0009 1 v s 0 5 4 1 v s 0 6 5 Figure 19. Rotation into Stop Notch. t. When the hammer is fully to the rear, it is initially caught by the automatic sear. However, the front hook of the burst disconnector is now fully in the next stop notch which is deeper than the others. R E A R H O O K 1 v s 0 6 8 Figure 20. Completion of Firing. u. Because a stop notch is deeper than the others, it allows the front hook of the burst disconnector further forward than before.
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TM 9-1005-319-23&P 0009 TEST AND INSPECTION - Continued 1 v s 0 6 9 Figure 21. Release of Trigger. v. Once the trigger is released, the trigger nose comes up and holds the hammer back. NOTE Pulling the trigger to the rear and holding it back again will fire another three-round burst. This will continue until the magazine is empty. However, the trigger must be released between each burst. END OF TASK STOWAGE NOTE Prior to stowing the weapon in arms room, perform steps 1 through 4. 1. Clear weapon.
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TM 9-1005-319-23&P 0009 1 v s 0 7 0 Figure 22. Stowage of Weapon. 6. Use M12 Storage Rack after modifying as described below. a. The M12 storage rack is the correct arms rack in which to store the M4/M4A1 carbine. The carbine must be stored with buttstock extended. The back-up iron sight must be mounted in rearmost slot of upper receiver. When storing the M4/M4A1 carbine in the M12 storage rack a mounting bracket (WP 0045, item 23) may be used for each carbine being stored.
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TM 9-1005-319-23&P 0010 FIELD MAINTENANCE BACK-UP IRON SIGHT MAINTENANCE REMOVAL, DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY, LUBRICATION, INSTALLATION EFFECTIVITY NOTICE M16A3, M16A4 RIFLE M4, M4A1 CARBINE INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Recoil screw, 12996824 References TM 9-1005-319-10 REMOVAL WARNING Before starting removal procedure, clear the weapon.
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TM 9-1005-319-23&P 0010 REMOVAL - Continued 1 2 3 4 1 v s 0 7 1 Figure 1. Removal of Back-up Iron Sight. 2. Using 1/8 in. key wrench, remove recoil screw (1). Remove locking bar (2) and back-up iron sight (BUIS) (3) from upper receiver (4). Discard recoil screw.
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TM 9-1005-319-23&P 0010 DISASSEMBLY WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 1 0 1 0 5 6 7 8 1 1 9 1 2 1 3 1 5 1 7 1 4 1 1 1 6 1 v s 0 7 2 Figure 2. Disassembly/Assembly of BUIS. 1. Drive out spring pin (5) using hammer and 1/16 in. punch. 2. Catch windage knob (6), index spring (7), and ball bearing (8). 3. Using a flat bladed screwdriver, remove windage screw (9). 4.
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TM 9-1005-319-23&P 0010 REPAIR OR REPLACEMENT 1. Check sight parts for serviceability. Visually inspect sight base for cracks, corrosion, or damage. Check for legibility of markings. Detent indexing surfaces should be well formed. Replace if defective. 2. Visually inspect frame assembly for cracks, corrosion, or damage. Sight aperture should be round. Flip-up sight arm must lock down. Replace if defective. 3. Check sight cam for function, corrosion, or damage. Replace if defective. 4.
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TM 9-1005-319-23&P 0010 4. Apply 2 or 3 drops of CLP to index spring and ball bearing through hole in side of windage knob. 5. Apply light coat of CLP to threads of windage screw. Turn screw side-to-side before returning to original zeroing mark. END OF TASK INSTALLATION 1 2 3 4 1 v s 0 7 1 Figure 3. Installation of Back-up Iron Sight. NOTE Recoil screw is mandatory replacement when removed. There is a locking patch on threads of screw. 1.
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TM 9-1005-319-23&P FIELD MAINTENANCE BOLT AND BOLT CARRIER ASSEMBLY MAINTENANCE DISASSEMBLY, CLEANING, INSPECTION — ACCEPTANCE AND REJECTION CRITERIA, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Bolt carrier key tool (WP 0039, Figure 23, item 12) Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Pipe cleaner (WP 0045, item 11) Rifle bore cleaning compound (RBC) (WP 00
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TM 9-1005-319-23&P 0011 DISASSEMBLY 2 3 1 5 4 1 v s 0 7 3 Figure 1. Disassembly of Bolt and Bolt Carrier Assembly. CAUTION To prevent damage to pin, do not spread or close legs of firing pin retaining pin. 1. Remove firing pin retaining pin (2). 2. Tip key and bolt carrier assembly (5) and catch firing pin (1) as it drops out. 3. Rotate bolt cam pin (3) one quarter turn and lift straight up to remove. 4. Remove bolt assembly (4) from key and bolt carrier assembly (5).
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TM 9-1005-319-23&P 0011 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA NOTE There are bolts and bolt carriers on fielded rifles, some with chrome-plated exterior surface finishes and some with phosphate coating. Both finishes are acceptable under certain operational requirements and/or restrictions. Phosphate-coated bolt carriers are required for divisional combat units. Chrome-plated bolt carriers are acceptable for divisional non-combat units and training center units.
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TM 9-1005-319-23&P 0011 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA - Continued 4. Inspect carrier key (6) for dents, distortion, or looseness. If dented or loose, see REPAIR OR REPLACEMENT in this work package. 5. Visually inspect the carrier key screws (8) for looseness and proper staking. NOTE Do not attempt to re-torque if there is no loosening of the screws indicated by the staking marks. Surface "A" must not indicate distortion or damage which impairs parallelism. A maximum of 0.025 in. (0.
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TM 9-1005-319-23&P 0011 NOTE Firing pin should touch the gage on minimum but should not touch on maximum. 1 0 1 4 1 v s 0 7 7 Figure 6. Firing Pin Protrusion Test. 7. Insert firing pin (1) through bolt assembly (4). Position firing pin protrusion gage (10) P/N 7799735 to check for proper protrusion of firing pin (minimum 0.028 in. (0.07 cm) to maximum 0.036 in. (0.09 cm)). Replace defective firing pin. I N O U T 4 5 1 v s 0 7 8 Figure 7. Checking for Binding of Bolt Assembly. 8.
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TM 9-1005-319-23&P 0011 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA - Continued 5 4 1 v s 0 7 9 Figure 8. Checking for Fit of Bolt Assembly. 9. Check bolt assembly (4) for proper fit with bolt cam pin removed. Turn key and bolt carrier assembly (5) and suspend so the bolt assembly is pointed down. The bolt assembly must not drop out. If weight of bolt assembly allows it to drop out of key and bolt carrier assembly, replace bolt rings (see WP 0012).
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TM 9-1005-319-23&P 0011 CAUTION Extreme care must be exercised during the following procedure to ensure that the striking force is not directed to the attaching screws and that the tube portion is not enlarged or flared beyond original requirement. Such enlargement would permit loss of gas pressure when the key and gas tube come together during functioning. The edge of workbench is recommended. 1. 2. Repair small dents and/or distortions in carrier key (6) using bolt carrier key tool (11) as follows: a.
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TM 9-1005-319-23&P 0011 ASSEMBLY - Continued 1. Lubricate parts; refer to TM 9-1005-319-10. NOTE Before installing bolt assembly, check to see that the bolt ring gaps are staggered to prevent loss of gas pressure. 2. Install bolt assembly (4) into key and bolt carrier assembly (5). 3. Install bolt cam pin (3) and rotate one turn to secure bolt assembly (4). 4. Hold key and bolt carrier assembly (5) with bolt assembly (4) down and drop in firing pin (1). 5.
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TM 9-1005-319-23&P FIELD MAINTENANCE BREECH ASSEMBLY BOLT MAINTENANCE DISASSEMBLY, CLEANING, INSPECTION — ACCEPTANCE AND REJECTION CRITERIA, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Penetrant kit (WP 0045, item 27) Wiping rag (WP 0045, item 30) References TM 9-1005-319-10 WP 0015 Equipment Condition Bolt assembly removed (WP 0011) 0012-1 0012
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TM 9-1005-319-23&P 0012 DISASSEMBLY WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 1 3 2 1 v s 0 8 1 Figure 1. Removal of Cartridge Extractor. NOTE Do not separate cartridge extractor and extractor spring assembly unless replacement of either or both is required. Do not remove the rubber insert from the extractor spring assembly. 1. Push out extractor pin (1) and remove cartridge extractor (2) and extractor spring assembly (3) as a unit. 2.
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TM 9-1005-319-23&P 0012 CAUTION Be sure to use vise jaw protective caps. 3. Hold bolt (4) in vise and remove spring pin (5) using 1/16 in. punch and hammer. 6 7 1 v s 0 8 3 Figure 3. Removal of Cartridge Ejector. 4. Remove punch; be sure to catch cartridge ejector (7) and ejector spring (6) to prevent loss. 8 4 1 v s 0 8 4 Figure 4. Removal of Bolt Rings. NOTE Do not remove bolt rings unless they require replacement and three new replacement bolt rings are on hand. 5.
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TM 9-1005-319-23&P 0012 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA U N S E R V I C E A B L E S E R V I C E A B L E 1 v s 0 8 5 Figure 5. Bolt Face Inspection. 1. Inspect bolt (4) for pits, burrs, and wear as follows: a. Bolt faces with a cluster of pits which are touching or tightly grouped, covering an area measuring approximately 1/8 in. (0.32 cm) across, will be rejected and replaced. b. Bolts which contain individual pits or a scattered pattern will not be rejected. c.
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TM 9-1005-319-23&P 0012 WARNING DRY CLEANING SOLVENT 3. Use penetrant kit (WP 0045, item 27) to check for cracks in bolt (4) as follows: a. The area to be inspected must be clean, free of oil, etc. Spray a small amount of remover on the area to be inspected, let dry and wipe off with a wiping rag. b. Spray penetrant (only enough to wet the area) on the area of the bolt (4) to be inspected. c. Spray developer over the penetrant and let the developer work.
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TM 9-1005-319-23&P 0012 REPAIR OR REPLACEMENT 8 1 2 3 1 2 6 7 1 v s 0 8 8 Figure 8. Inspection of Bolt Assembly Parts. 1. Check bolt rings (8) for cracks, kinks, bends, and proper stagger (gaps approximately 1/3 turn apart). Replace all three bolt rings if one or more bolt rings is damaged. 2. Inspect cartridge extractor (2), extractor spring assembly (3), and extractor pin (1) for cracks, breaks, chips, and other damage. Pay close attention to cartridge extractor lip (12). If damaged, replace.
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TM 9-1005-319-23&P 0012 4 8 1 v s 0 8 9 Figure 9. Installation of Bolt Rings. NOTE To install a bolt ring, carefully place one end in the bolt ring groove and hold in place with the thumb of one hand. With the index finger of the other hand, gently guide and push the rest of the bolt ring into the groove a little bit at a time until the entire bolt ring is in place. Make certain bolt ring gaps are staggered to prevent loss of gas pressure.
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TM 9-1005-319-23&P 0012 ASSEMBLY - Continued 4 5 6 7 1 v s 0 9 1 Figure 11. Installation of Spring Pin. 5. Compress and hold ejector spring (6) and cartridge ejector (7) in place with a 3/8 in. punch. 6. Using hammer and 1/16 in. punch, complete installation of spring pin (5) so that ends are flush with outside of bolt (4). 3 2 1 v s 0 9 2 Figure 12. Installation of Extractor Spring Assembly. NOTE Do not disassemble rubber insert from extractor spring assembly. 7.
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TM 9-1005-319-23&P 0012 2 3 4 1 1 v s 0 9 3 Figure 13. Installation of Extractor Pin. 8. Position cartridge extractor (2) and extractor spring assembly (3) on bolt (4). 9. Compress extractor spring assembly (3) and cartridge extractor (2) to align holes. 10. Install extractor pin (1) by hand.
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TM 9-1005-319-23&P FIELD MAINTENANCE KEY AND BOLT CARRIER ASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Carrier key screws (2) 8448508 References TM 9-1005-319-10 WP 0011 WP 0039 Equipment Condition Key and bolt carrier assembly removed (WP 0011) DISASSEMBLY 1 2 3 1 v s 0 9 4 Figure 1.
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TM 9-1005-319-23&P 0013 REPAIR OR REPLACEMENT Inspect bolt carrier key and bolt carrier. If unserviceable, replace defective parts as authorized in WP 0039. END OF TASK ASSEMBLY 1 2 3 1 v s 0 9 5 Figure 2. Installation of Carrier Key. NOTE Do not reuse old carrier key screws. New carrier key screws must be used at assembly. 1. If disassembled, place bolt carrier (3) in vise using vise jaw caps. Install and position bolt carrier key (2) on bolt carrier. 2. Install two new carrier key screws (1).
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TM 9-1005-319-23&P 0013 1 1 v s 0 9 7 Figure 4. Staking Carrier Key Screws. 0 .0 2 5 M A X 4 P L A C E S S U R F A C E A 1 v s 0 9 8 Figure 5. Staking Carrier Key Screws in the Field. NOTE Field staking method will be used by field units. 4. Use solid center punch and hand hammer to stake the two carrier key screws (1) in three places. 5. Reassemble weapon; refer to TM 9-1005-319-10. NOTE If blanks are used, blank firing attachment (BFA) must be attached. 6.
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TM 9-1005-319-23&P 0014 FIELD MAINTENANCE CHARGING HANDLE ASSEMBLY MAINTENANCE DISASSEMBLY, CLEANING, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 References TM 9-1005-319-10 WP 0039 Equipment Condition Charging handle assembly removed (WP 0009) DISASSEMBLY WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 3 1 4 2 2 1 v s 0 9 9 Figure 1. Disassembly of Charging Handle Assembly. 1.
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TM 9-1005-319-23&P 0014 CLEANING Clean all items; refer to TM 9-1005-319-10. Remove carbon deposits. END OF TASK REPAIR OR REPLACEMENT Inspect all items for breaks, cracks, or damage. Replace all unserviceable items as authorized by WP 0039. END OF TASK ASSEMBLY 1. Lightly lubricate all items; refer to TM 9-1005-319-10. WARNING To avoid injury to eyes, use care when installing spring-loaded parts. 3 4 1 2 1 v s 1 0 0 Figure 2. Assembly of Charging Handle Assembly. 2.
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TM 9-1005-319-23&P FIELD MAINTENANCE UPPER RECEIVER AND BARREL ASSEMBLY (M16A2) 9349050, (M16A3, M16A4) 12973010, AND (M4, M4A1) 12972680 MAINTENANCE DISASSEMBLY, CLEANING, INSPECTION — ACCEPTANCE AND REJECTION CRITERIA, REPAIR OR REPLACEMENT, ASSEMBLY, TEST AND INSPECTION INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Modified needle nose pliers (WP 0030, Figure 7) Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5
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TM 9-1005-319-23&P 0015 DISASSEMBLY CAUTION Do not use a screwdriver or any other tool when removing the handguard assemblies. Doing so may damage the handguard assemblies and/or slip ring. Do not remove heat shield for any reason. Doing so will damage the heat shield and the handguard assemblies will have to be replaced. NOTE Refer to TM 9-1005-319-10 for "buddy system" procedure to remove handguard assemblies. M16A2 RIFLE ONLY 1 2 1 v s 1 0 1 Figure 1. Removal of Upper Handguard Assembly (M16A2).
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TM 9-1005-319-23&P 0015 3 2 1 v s 1 0 2 Figure 2. Removal of Lower Handguard Assembly (M16A2). 2. Push down on handguard slip ring (2) and lift the lower handguard assembly (3) up and out. M16A3 & M16A4 RIFLE/M4 & M4A1 CARBINE ONLY 2 4 5 6 1 v s 1 0 3 Figure 3. Removal of Upper and Lower Handguards (M16A3/M16A4/M4/M4A1). 3. Compress handguard slip ring (2) and pivot lower handguard (6) off front retaining clip. 4. Loosen slotted screw (4) in upper handguard assembly (5).
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TM 9-1005-319-23&P 0015 DISASSEMBLY - Continued ALL WEAPONS 1 0 9 1 v s 1 0 5 Figure 5. Removal of Spring Pin. 6. Using ball-peen hammer and 5/64 in. diameter drive pin punch, drive spring pin (9) (which retains gas tube) from front sight assembly (10). 1 1 1 2 1 0 1 v s 1 0 6 Figure 6. Removal of Gas Tube. 7. Slide gas tube (12) back into upper receiver assembly (11) to clear front sight assembly (10). Then lift slightly, pull forward, and remove gas tube.
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TM 9-1005-319-23&P 0015 1 3 1 5 1 4 1 7 1 6 1 v s 1 0 7 Figure 7. Removal of Compensator. 8. Position upper receiver and barrel assembly (14) in barrel removal fixture (13) and secure both in machinist's vise (17). 9. Using combination wrench (15), remove compensator (16). 1 4 1 8 1 v s 1 0 8 Figure 8. Removal of Recessed Washer. 10. Remove recessed washer (18) and discard. 11. Remove upper receiver and barrel assembly (14) from barrel removal fixture and machinist's vise.
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TM 9-1005-319-23&P 0015 DISASSEMBLY - Continued 1 5 1 3 1 4 1 9 1 7 1 v s 1 0 9 Figure 9. Loosening of Barrel Nut Assembly. 12. Place upper receiver and barrel assembly (14) into barrel removal fixture (13) and clamp into machinist's vise (17). NOTE Combination wrench must be pushed toward upper receiver assembly to compress slip ring spring in barrel nut assembly. Do not use a torque wrench to loosen the barrel nut assembly. 13. Using combination wrench (15), loosen barrel nut assembly (19).
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TM 9-1005-319-23&P 8 2 1 0015 2 2 2 2 0 2 0 1 v s 1 1 1 Figure 11. Removal of Handguard Slip Ring. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 16. Remove retaining ring (20) using retaining ring pliers. 17. Remove slip ring spring (22) and handguard slip ring (2). 18. Do not remove barrel nut (21) from barrel assembly (8).
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TM 9-1005-319-23&P 0015 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA 2 n d R ib fr o m R e a r to th e E n d o f H a n d g u a r d 2 3 2 4 1 s t R ib F o r w a r d C r itic a l A r e a (S h a d e d ) 1 v s 1 1 2 Figure 12. Inspection of Handguard Assemblies. 1. Inspect handguard assemblies for breaks, separation, and cracks using the following guidelines: a.
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TM 9-1005-319-23&P N O T A C C E P T A B L E 0015 A C C E P T A B L E 1 v s 1 1 3 Figure 13. Bore Inspection. 5. Inspect bore for burrs, cracks, rust, bulges, and pits using the following guidelines. a. Pits no wider than a land or groove and no longer than 3/8 in. (0.95 cm) are allowed in the bore. b. Uniformly fine pits in a densely pitted area of the bore are allowable. c. Lands that appear dark blue due to coating of gliding metal from projectiles are allowable. d.
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TM 9-1005-319-23&P 0015 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA - Continued 2 6 1 v s 1 1 5 Figure 15. Inspection of Chamber. 8. If upper receiver and barrel assembly is assembled, inspect chamber using reflector tool (26) and flashlight. Pits 1/8 in. (0.32 cm) in length are cause for rejection. Replace barrel assembly if defective. If barrel assembly is replaced, inspect headspace. See TEST AND INSPECTION in this work package. 9.
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TM 9-1005-319-23&P 0015 WARNING DICHLOROMETHANE b. Wash area with technical dichloromethane (methylene chloride) (WP 0045, item 14) to remove all dirt, grease, and foreign material. c. Apply sealing compound (WP 0045, item 32), mixed in accordance with manufacturer's directions, to areas to be filled. d. Spread sealing compound as smoothly as possible into defective area using a putty knife or similar tool. NOTE Do not feather edges. e.
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TM 9-1005-319-23&P 0015 REPAIR OR REPLACEMENT - Continued S H I N Y S U R F A C E S (R E P A R A B L E ) 1 v s 1 1 7 Figure 17. Inspection for Shiny Surfaces. WARNING SOLID FILM LUBRICANT CAUTION Solid film lubricant is to be used only as an exterior surface protective finish and touchup. If solid film lubricant comes in contact with recoiling parts or functional surfaces of the weapon, remove immediately by washing with technical dichloromethane. 5.
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TM 9-1005-319-23&P 0015 ASSEMBLY 8 2 1 2 2 2 2 0 2 0 1 v s 1 1 1 Figure 18. Installation of Handguard Slip Ring. WARNING To avoid injury to eyes, use care when installing spring-loaded parts. NOTE After cleaning, apply molybdenum disulfide grease (WP 0045, item 18) to threads of barrel nut assembly before installation. 1. Position barrel nut (21) by sliding it to the rear of barrel assembly (8) as far as possible. 2. Slide handguard slip ring (2) over barrel nut (21). 3.
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TM 9-1005-319-23&P 0015 ASSEMBLY - Continued 1 1 M 4 M 1 6 A 3 /M 1 6 A 4 , M 4 /M 4 A 1 2 7 1 1 1 3 8 1 7 M 1 6 A 2 1 v s 1 1 8 Figure 19. Alignment of Barrel Assembly and Upper Receiver Assembly. NOTE The alignment pin must not show any signs of looseness. 5. Position barrel assembly (8) with alignment pin (27) up. Using barrel removal fixture (13), clamp barrel assembly in vise (17). NOTE The slot should fit the alignment pin perfectly with very little or no rotational play present.
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TM 9-1005-319-23&P 0015 1 5 1 1 1 9 1 v s 1 1 9 Figure 20. Torquing of Barrel Nut Assembly. 8. Engage threads of barrel nut assembly (19) with upper receiver assembly (11). 9. Using combination wrench (15) and torque wrench, torque barrel nut assembly (19) to 30 ft-lb (40.5 N-m). Torque is measured when both wrenches are used together. NOTE Performance of torquing procedure three times provides for a better thread fit and prevents barrel nut from becoming loose.
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TM 9-1005-319-23&P 0015 ASSEMBLY - Continued V E R T I C A L T A R G E T L I N E M 1 6 A 2 1 v s 1 2 0 Figure 21. Alignment of Front and Rear Sights. NOTE If barrel assembly (usually new) is not properly aligned in upper receiver assembly (usually an old part), excessive windage will be present and upper receiver assembly will require replacement to obtain proper fit between alignment pin and slot. 11. Loosen vise and align bore on a distant vertical target.
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TM 9-1005-319-23&P 0015 CAUTION Do not torque over 80 ft-lb (108 N-m) while tightening barrel nut assembly to next hole, to allow for proper alignment of gas tube. NOTE Do not attempt to hold upper receiver assembly with pry bar; however, if barrel assembly turns in holding fixture, a pry bar may be used through front sight assembly base to help prevent barrel assembly from turning in holding fixture. Use care not to distort or bend front sight assembly or retaining pins.
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TM 9-1005-319-23&P 0015 ASSEMBLY - Continued 8 1 8 1 6 1 v s 1 2 2 Figure 23. Installation of Compensator. 14. Install new recessed washer (18) with the large diameter of recessed washer forward toward compensator and the small diameter rearward toward barrel assembly (8). 1 5 8 1 0 1 6 T H I R D S L O T 2 5 1 v s 1 2 3 Figure 24. Alignment of Compensator. NOTE Recessed washer does not require torquing. 15. Install compensator (16) on barrel assembly (8) using combination wrench (15).
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TM 9-1005-319-23&P 0015 1 2 1 0 1 9 1 v s 1 2 4 Figure 25. Installation of Gas Tube. 16. Slide gas tube (12) through barrel nut assembly (19) and then slide forward, inserting gas tube into hole in base of front sight assembly (10). 1 2 1 0 9 1 v s 1 2 5 Figure 26. Installation of Spring Pin. 17. Align holes in gas tube (12) and base of front sight assembly (10). NOTE To assist in installing spring pin modified nose pliers may be used. 18. Using ball-peen hammer and 5/64-in.
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TM 9-1005-319-23&P 0015 ASSEMBLY - Continued M16A3 & M16A4 RIFLE/M4 & M4A1 CARBINE ONLY NOTE Failure to install barrel stop assembly will prevent the M203A2 launcher from being mounted to the M16A3/M16A4 rifle. 7 8 1 v s 1 0 4 Figure 27. Installation of Barrel Stop Assembly. 19. Install barrel stop assembly (7) to barrel assembly (8) (M16A3/M16A4 Rifle only). Place barrel stop over thin section of barrel from six o'clock position, while avoiding contact with gas tube.
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TM 9-1005-319-23&P 22. 0015 Release handguard slip ring (2) and confirm that it slides forward evenly around rear flange of upper handguard assembly (5). Note that two alignment pins automatically interface with cut-outs in barrel nut assembly (19) at 10 and 2 o'clock positions to remove rotational play of handguard assembly. Install and tighten slotted screw (4) to medium tight. NOTE Do not remove thermal liner from lower handguard.
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TM 9-1005-319-23&P 0015 ASSEMBLY - Continued 2 9 3 2 1 v s 1 2 9 Figure 31. Installation of Lower Handguard Assembly (M16A2). 26. Install top of lower handguard assembly (3) in tube cap (29) while pushing down on handguard slip ring (2). Push bottom of lower handguard assembly in place and release handguard slip ring to lock both handguard assemblies in place.
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TM 9-1005-319-23&P 0015 M 1 6 A 1 R E J E C T M A R K 3 0 M 1 6 A 2 R E J E C T M A R K 1 v s 1 3 0 Figure 32. Use of Barrel Erosion Gage. NOTE When gaging barrel erosion prior to deployment of weapons, use the first mark (M16A1 Reject Mark) as the preembarkation mark for the M16A2/M16A3/M16A4 Rifles and M4/M4A1 Carbines. 1. Install key and bolt carrier assembly with bolt assembly and firing pin removed. Hold weapon in vertical position with receiver up.
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TM 9-1005-319-23&P 0015 TEST AND INSPECTION - Continued 3 1 1 4 1 v s 1 3 1 Figure 33. Use of Bore Straightness Gage. NOTE Ensure barrel is clean prior to performing the following test. 3. Check straightness of bore using straightness gage PN 8448202 (31). Put gage in barrel. Tilt barrel and allow gage to fall through. Catch gage. 4. Gage must pass freely through barrel. If gage does not pass through barrel, recheck as follows.
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TM 9-1005-319-23&P 0015 3 2 3 4 3 3 1 1 3 5 1 v s 1 3 2 Figure 34. Insertion of Headspace Gage. 5. Assemble charging handle assembly (32), bolt assembly (33), and key and bolt carrier assembly (34) into upper receiver assembly (11). 6. Insert headspace gage PN 7799734 (35) in chamber. 3 2 3 4 1 1 1 v s 1 3 3 Figure 35. Checking Headspace. NOTE For the purpose of this test "light finger pressure" is defined as 8 1/2 to 8 3/4 pounds. 7.
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TM 9-1005-319-23&P 0015 TEST AND INSPECTION - Continued 3 6 3 7 3 4 3 2 3 5 1 v s 1 3 4 Figure 36. Use of Weights in Headspace Check. 9. If the test fails using finger pressure, remove the gage and perform the test again as follows. With the muzzle down, stack 8 1/2 to 8 3/4 pounds of trigger weights (36) on a locally fabricated spacer/weight (37) on key and bolt carrier assembly (34). Insert headspace gage (35) and test per above instructions. 10.
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TM 9-1005-319-23&P FIELD MAINTENANCE BARREL ASSEMBLY (M16A2) 9349124, (M16A3, M16A4) 12598107, REPLACEMENT BARREL AND FRONT SIGHT ASSEMBLY (M4) 9390007, (M4A1) 12991851 MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Front sight post removal and installation tool (WP 0030, Figure 2) Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Abrasive cloth (WP 0045, item 13) Chemical and oil protective gloves (WP 004
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TM 9-1005-319-23&P 0016 DISASSEMBLY 2 1 1 v s 1 3 5 Figure 1. Removal/Installation of Front Sight Post. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. NOTE Remove front sight post only if parts are damaged. 1. Using a dummy cartridge or a front sight post removal and installation tool (2) (WP 0030, Figure 2), remove front sight post (1) by turning counterclockwise. 3 4 1 v s 1 3 6 Figure 2. Removal/Installation of Front Sight Detent and Spring. 2.
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TM 9-1005-319-23&P 0016 RIFLE ONLY 5 1 v s 1 3 7 6 Figure 3. Removal of Small Sling Swivel (Rifle). NOTE Disassemble small sling swivel only if repair is necessary. 3. If necessary, knock out tubular rivet (6) with a hammer and punch and remove small sling swivel (5). Discard tubular rivet. CARBINE ONLY 7 7 1 v s 1 3 8 Figure 4. Removal/Installation of Spring Pins (Carbine). 4. Remove two spring pins (7).
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TM 9-1005-319-23&P 0016 DISASSEMBLY - Continued 8 9 1 v s 1 3 9 Figure 5. Removal/Installation of Locking Bar (Carbine). 5. Lift locking bar (8) up and out of swivel mount (9). 9 1 0 1 v s 1 4 0 Figure 6. Removal/Installation of Swivel Mount (Carbine). 6. Remove swivel mount (9) from barrel and barrel extension assembly (10).
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TM 9-1005-319-23&P 0016 5 9 6 1 v s 1 4 1 Figure 7. Disassembly/Assembly of Swivel Mount (Carbine). 7. Remove tubular rivet (6). Separate small sling swivel (5) from swivel mount (9). END OF TASK REPAIR OR REPLACEMENT 1. Inspect front sight post, front sight detent, and helical spring for damage. If damaged, replace. 2. Inspect front sight assembly for chips, breaks, and cracks. 1 1 1 1 1 2 1 v s 1 4 2 Figure 8. Repair of Bent Front Sight Assembly.
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TM 9-1005-319-23&P 0016 REPAIR OR REPLACEMENT - Continued 3. Inspect front sight guards (11) for bends. Straighten bent front sight guards as follows: NOTE Remove spring before heating. (Heat will damage spring.) The sight post and plunger may be reused unless damaged. a. Remove front sight post, detent, and helical spring (see DISASSEMBLY). NOTE Use copper or brass caps (jaw inserts) on bench vise to prevent damage to front sight base during clamping. b. Place front sight base (12) in a bench vise.
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TM 9-1005-319-23&P b. 0016 With the gage remaining in the bore, hold weapon in a vertical position with end of barrel into which gage was inserted pointing up. Ensure that if/when gage passes through barrel it will not be damaged. Using hand pressure ONLY, flex portion of barrel between front sight assembly and compensator in all four directions (left, right, forward, and back). If barrel is only slightly bent, gage will drop through when barrel is flexed in one of these directions.
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TM 9-1005-319-23&P 0016 ASSEMBLY RIFLE ONLY 6 5 1 v s 1 4 3 Figure 9. Installation of Small Sling Swivel (Rifle). 1. If previously disassembled, position small sling swivel (5) and install new tubular rivet (6) using center punch and hammer to spread and flare the hollow head of the tubular rivet. CARBINE ONLY 2. Install small sling swivel (5) to swivel mount (9) with new tubular rivet (6) using center punch and hammer to spread and flare the hollow head of the tubular rivet.
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TM 9-1005-319-23&P 0016 WARNING To avoid injury to eyes, use care when installing spring-loaded parts. 7. Install front sight post (1) by turning front sight post removal and installation tool (2) clockwise until front sight post base is flush with or slightly below front sight frame. 8.
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TM 9-1005-319-23&P 0016 ASSEMBLY - Continued 1 v s 1 4 5 Figure 11. Adjustment of Front Sight Post. b. Using a dummy round or front sight post tool, adjust front sight so top of front sight post is 5mm above machined surfaces of front sight frame. 5 M M 1 v s 1 4 6 Figure 12. Final Measurement of Height. c. Visually check front sight post top height by using the marked plastic or paper card. Card must sit level on machined surfaces of front sight frame to obtain an accurate reading.
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TM 9-1005-319-23&P 0017 FIELD MAINTENANCE UPPER HANDGUARD ASSEMBLY AND BARREL STOP ASSEMBLY (M16A3, M16A4) MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY EFFECTIVITY NOTICE M16A3, M16A4 RIFLE INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Spring pin (2) MS16562-223 References WP 0039 Equipment Conditions Upper handguard assembly removed from rifle (WP 0015) Barrel stop assembly removed from rifle (WP 0015) DISASSEMBLY 1 v s 1 4 7 Figure 1.
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TM 9-1005-319-23&P 0017 DISASSEMBLY - Continued 2 1 3 7 O L D 4 6 5 N E W 1 v s 1 4 8 Figure 2. Disassembly/Assembly of Handguard Assembly. 1. If damaged, remove slotted screw (2) from upper handguard (3). 2. Taking care not to damage rails, drive out spring pin (7) using 1/8 in. punch and hammer. Remove rear handguard clamp (1). Discard spring pin. 3. Taking care not to damage rails, drive out spring pin (6) using 1/8 in. punch and hammer. Remove special shaped spacer (5) and flat spring (4).
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TM 9-1005-319-23&P 0017 REPAIR OR REPLACEMENT 1. Clean, inspect, and lubricate the rail surfaces and recoil slots of the upper handguard assembly when the weapon is cleaned and/or when handguards are being installed. 2. Use the general purpose brush (M16 rifle double-ended toothbrush) from the standard rifle/carbine cleaning kit to clean the rail surfaces. 3. Lightly lubricate upper handguard assembly and spring latches in the handguard. 4. Remove burrs or nicks from rails using a small stone. 5.
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TM 9-1005-319-23&P FIELD MAINTENANCE UPPER HANDGUARD ASSEMBLY (M4, M4A1) MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY EFFECTIVITY NOTICE M4, M4A1 CARBINE INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Spring pin (2) MS16562-223 References WP 0039 Equipment Conditions Upper handguard assembly removed from carbine (WP 0015) 0018-1 0018
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TM 9-1005-319-23&P 0018 DISASSEMBLY 1 v s 1 4 7 a Figure 1. Placement of Handguard Assembly for Repair. CAUTION The handguard assembly is aluminum; therefore, care should always be taken not to damage or burr the slots of the rails. NOTE The spring pins in handguard assembly must be replaced with new pins each time they are removed. A good one person method for removal of the spring pins to do repair work is to place a short piece of 1" x 4" wooden block under the rails.
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TM 9-1005-319-23&P 0018 1. If damaged, remove slotted screw (2) from upper handguard (3). 2. Taking care not to damage rails, drive out spring pin (7) using 1/8 in. punch and hammer. Remove rear handguard clamp (1). Discard spring pin. 3. Taking care not to damage rails, drive out spring pin (6) using 1/8 in. punch and hammer. Remove special shaped spacer (5) and flat spring (4). Discard spring pin. END OF TASK REPAIR OR REPLACEMENT 1.
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TM 9-1005-319-23&P FIELD MAINTENANCE UPPER RECEIVER ASSEMBLY AND REAR SIGHT ASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, LUBRICATION, ASSEMBLY, TEST AND INSPECTION INITIAL SETUP: Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Index screw 9349065 Solid film lubricant (WP 0045, item 20) References TM 9-1005-319-10 WP 0015 WP 0020 WP 00
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TM 9-1005-319-23&P 0019 DISASSEMBLY ALL WEAPONS 4 3 2 1 1 v s 1 5 1 Figure 1. Removal of Ejection Port Cover. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. NOTE Headless grooved pin may bind against forward assist housing and require some additional force to remove. 1. Remove retaining ring (1) and slide headless grooved pin (4) to the rear. 2. Catch cover spring (2) and ejection port cover (3) to prevent loss as headless grooved pin (4) is withdrawn.
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TM 9-1005-319-23&P 0019 M16A2 RIFLE ONLY 5 8 7 6 1 v s 1 5 2 Figure 2. Removal of Windage Knob. CAUTION Be sure to catch small parts. AIR FORCE ONLY: Use magnet to keep from losing small parts. 3. Drive out spring pin (5) using a hammer and 1/16 in. punch. 4. Catch windage knob (8), helical spring (7), and ball bearing (6). 9 1 0 1 2 1 1 1 v s 1 5 3 Figure 3. Removal of Sight Aperture. 5. Using a flat-bladed screwdriver, remove windage screw (10) from rear sight base (11). 6.
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TM 9-1005-319-23&P 0019 DISASSEMBLY - Continued 1 4 1 3 1 1 2 2 1 5 2 1 1 6 1 7 2 0 1 9 1 8 1 v s 1 5 4 Figure 4. Disassembly of Rear Sight Assembly. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 7. Drive out spring pin (19) using a 3/32 in. punch. Catch helical spring (18) when punch is withdrawn. 8. Rotate elevation index (13) until rear sight base (11) clears upper receiver (17). Catch ball bearing (16) and helical spring (15) as rear sight base clears.
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TM 9-1005-319-23&P 0019 ALL WEAPONS 1 7 2 5 2 4 2 3 1 v s 1 5 5 Figure 5. Removal of Forward Assist Assembly. 11. Remove spring pin (23) using 3/32 in. drive pin punch and hand hammer. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 12. Remove forward assist assembly (24) and helical spring (25) from upper receiver (17). For further disassembly of forward assist assembly see WP 0020. END OF TASK REPAIR OR REPLACEMENT M16A2 RIFLE ONLY 1.
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TM 9-1005-319-23&P 0019 REPAIR OR REPLACEMENT - Continued 7. Inspect rear sight guards for bends; if bent, repair as follows: NOTE Ensure that rear sight assembly components are removed from upper receiver. 2 6 2 6 2 7 1 7 1 v s 1 5 6 Figure 6. Straightening Rear Sight Guards. a. Place carrying handle (27) in a vise using jaw clamps. Tighten vise to firmly hold upper receiver (17). b. Using two adjustable wrenches, gradually bend guards (26) to straighten.
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TM 9-1005-319-23&P 0019 ALL WEAPONS 8. Inspect ejection port cover and latch assembly for serviceability. 9. Inspect all parts for damage and wear. Replace all defective parts as authorized by WP 0039. END OF TASK LUBRICATION Lubricate upper receiver assembly and rear sight assembly. Apply cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) to helical springs and ball bearings (three each) and threaded portion of screws before installation.
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TM 9-1005-319-23&P 0019 ASSEMBLY - Continued M16A2 RIFLE ONLY 1 4 1 3 2 8 2 2 2 1 1 7 2 0 1 v s 1 5 8 Figure 8. Assembly and Installation of Elevation Knob Assembly. 3. Assemble elevation knob (22), elevation index (13), and new index screw (14) using 1/16 in. key wrench. Do not overtighten index screw as scale will require adjustment. 4. Install ball bearing (21) and helical spring (20) using needle-nose pliers or tweezers. 5.
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TM 9-1005-319-23&P 1 1 0019 1 5 1 6 1 7 2 8 1 v s 1 5 9 Figure 9. Installation of Rear Sight Base. 6. Insert threaded portion of rear sight base (11) into upper receiver (17) and rotate elevation knob assembly (28) until threads engage. 7. Insert helical spring (15) and ball bearing (16) into hole as elevation knob assembly (28) is further rotated and rear sight base (11) is lowered into upper receiver (17). Rotate elevation knob assembly until rear sight base is all the way down.
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TM 9-1005-319-23&P 0019 ASSEMBLY - Continued 2 9 1 7 1 9 1 8 2 8 1 8 1 1 1 v s 1 6 0 Figure 10. Installation of Helical Spring. CAUTION Ensure that spring pin passes over helical spring, not through its coils. 8. Insert helical spring (18) through underside of upper receiver (17). Compress helical spring with a small tip screwdriver (29) to install spring pin (19). Spring pin must pass over helical spring, not through its coils.
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TM 9-1005-319-23&P 9. 10. 0019 Install flat spring (12) and sight aperture (9) in rear sight base (11). Install windage screw (10) with screwdriver. Insert helical spring (5) and ball bearing (6) in windage knob (8). NOTE Tilt upper receiver toward windage knob during positioning to prevent loss of ball bearing. 11. Position windage knob (8) on shaft of windage screw (10). Align holes in windage knob with hole of shaft in windage screw. Install spring pin (5).
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TM 9-1005-319-23&P 0019 TEST AND INSPECTION 1 4 8 1 3 2 2 2 1 2 0 1 v s 1 6 3 Figure 13. Zeroing Elevation Knob. 1. Rotate and test elevation index (13) and windage knob (8) for ease of functioning. 2. Inspect elevation knob zero as follows: a. Rotate elevation knob (22) counterclockwise until the rear sight assembly is all the way down. If a whole click is not felt as the rear sight assembly stops, the rear sight assembly has bottomed out and will not pivot freely. b.
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TM 9-1005-319-23&P AIR FORCE ONLY: Perform mechanical zero procedures as follows: NOTE This procedure, when used in conjunction with front sight mechanical zero adjustment, will give an approximate battle site zero to most M16A2 rifles. The following steps can also be used before firing a new or newly assigned rifle. Use the procedure to check rifles stored in preferred packaging during routine inspections.
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TM 9-1005-319-23&P 0019 TEST AND INSPECTION - Continued 1 v s 1 6 6 Figure 16. Visual Verification. c. Visually check rear sight to ensure it is centered after making adjustments. Also, ensure the rear sight is set in the short-range (0 - 2) position. 4. Assemble rifle; refer to TM 9-1005-319-10. 5. After the rifle is assembled, center rear sight, place at the 300 meter mark, and perform the following check: a. While looking at a light background, obtain good sight alignment. b.
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TM 9-1005-319-23&P 0020 FIELD MAINTENANCE FORWARD ASSIST ASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, LUBRICATION, ASSEMBLY INITIAL SETUP: Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) References TM 9-1005-319-10 Equipment Condition Forward assist assembly removed (WP 0019) DISASSEMBLY 4 2 3 1 5 5 1 v s 1 6 7 Figure 1.
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TM 9-1005-319-23&P 0020 REPAIR OR REPLACEMENT 1. Inspect forward assist pawl (1) for burrs, chips, and cracks. Minor burrs may be removed using fine files or stones, as required. Do not deform forward assist pawl. Replace if defective. 2. Inspect pawl detent (2) for burrs and cracks. Minor burrs may be removed using fine files or stones, as required. Do not deform pawl detent. Replace if defective. 3. Inspect helical spring (3) for kinks, breaks, and wear. Replace helical spring if defective. 4.
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TM 9-1005-319-23&P FIELD MAINTENANCE LOWER RECEIVER AND BUTTSTOCK ASSEMBLY MAINTENANCE DISASSEMBLY, INSPECTION — ACCEPTANCE AND REJECTION CRITERIA, REPAIR OR REPLACEMENT, ASSEMBLY, TEST AND INSPECTION INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Pivot pin installation tool (WP 0030, Figure 4) Pivot pin removal tool (WP 0030, Figure 3) Slave pin (WP 0030, Figure 5) Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5
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TM 9-1005-319-23&P 0021 DISASSEMBLY 1 2 5 3 4 1 v s 1 6 9 Figure 1. Removal of Pistol Grip. 1. Remove machine screw (2) and lockwasher (3). Discard lockwasher. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 2. Carefully remove pistol grip (1) and catch helical spring (5) and safety detent (4) to prevent loss. RIFLE ONLY 6 1 v s 1 7 0 Figure 2. Removal of Machine Screw.
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TM 9-1005-319-23&P 0021 NOTE If machine screw is removed, it must be discarded and replaced with a new one. 3. Remove and discard machine screw (6). 7 8 1 1 1 0 9 1 v s 1 7 1 Figure 3. Removal of Buttstock Assembly (Rifle). WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 4. Remove buttstock assembly (7) carefully and catch helical spring (11), takedown pin detent (10), takedown pin (9), and stepped spacer (8) to prevent loss.
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TM 9-1005-319-23&P 0021 DISASSEMBLY - Continued CARBINE ONLY 1 2 1 4 1 3 1 v s 1 7 2 Figure 4. Removal of Buttstock Assembly (Carbine). 5. Extend buttstock assembly (12). 6. Grasp lock release lever (14) in area of retaining nut (13), pull downward, and slide buttstock assembly (12) to the rear to separate from lower receiver extension. 1 6 1 5 1 6 1 v s 1 7 3 Figure 5. Removal of Pivot Pin.
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TM 9-1005-319-23&P 0021 WARNING To avoid injury to eyes, use care when removing spring-loaded parts. NOTE Air Force Only: Lower receivers without a pivot pin detent are acceptable for use by Air Force personnel for all mission requirements worldwide. Refer to Air Force TO 11W3-5-5-24 for National Stock Numbers for replacement pivot pins. Catch pivot pin detent and helical spring as pivot pin is removed. 7. Insert fabricated pivot pin removal tool (15) (WP 0030, Figure 3) to compress pivot pin detent.
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TM 9-1005-319-23&P 0021 DISASSEMBLY - Continued 1 9 2 0 2 0 2 1 1 v s 1 7 5 Figure 7. Removal of Buffer Assembly and Action Spring. NOTE Make sure hammer is cocked and selector lever is not set on BURST or AUTOMATIC before removing buffer assembly. 9. Press buffer assembly (20) in about 1/4 in. (0.635 cm). Depress buffer retainer (21) and release buffer assembly and action spring (19). Remove buffer assembly and action spring from receiver while depressing buffer retainer.
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TM 9-1005-319-23&P 2 2 2 2 0021 2 3 2 4 2 5 1 v s 1 7 6 Figure 8. Removal of Bolt Catch. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 10. Remove spring pin (22) using 3/32 in. drive pin punch and hammer. 11. Remove bolt catch (23), bolt catch plunger (25), and bolt catch spring (24). 2 6 2 7 2 8 1 v s 1 7 7 Figure 9. Removal of Magazine Catch. 12.
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TM 9-1005-319-23&P 0021 DISASSEMBLY - Continued 2 9 3 0 3 2 3 1 1 v s 1 7 8 Figure 10. Removal of Sear and Selector Lever. 14. Use a rounded tip drive pin punch to push automatic sear pin (30) from lower receiver and receiver extension assembly (32). NOTE To remove automatic sear, selector lever must be positioned to BURST (if installed). 15. Remove automatic sear (29) and selector lever (31). 3 3 3 4 3 2 1 v s 1 7 9 Figure 11. Removal of Hammer Assembly.
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TM 9-1005-319-23&P 0021 NOTE To remove hammer assembly, place selector lever (if installed) to SEMI position. 16. Use drive pin punch to push hammer pin (34) from lower receiver and receiver extension assembly (32). 17. Remove hammer assembly (33). If further disassembly is required, see WP 0023. 3 5 3 6 3 8 3 2 3 7 3 2 4 0 4 1 4 2 3 9 3 9 1 v s 1 8 0 Figure 12. Removal of Trigger Assembly. NOTE Use of fabricated slave pin will allow removal of the following parts as a unit. 18.
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TM 9-1005-319-23&P 0021 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA R I F L E C A R B I N E 1 v s 1 8 1 Figure 13. Inspection of Buffer Assembly. 1. Inspect buffer assembly for cracks or damage. The buffer assembly has a hole with pin installed which protrudes equally on each side approximately 1/32 in. (0.08 cm). 2. If cracked or damaged, replace. F R E E L E N G T H 1 v s 1 8 2 Figure 14. Inspection of Action Spring. 3. Check free length of action spring.
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TM 9-1005-319-23&P 0021 1 v s 1 8 3 Figure 15. Inspection for Serial Number. 4. Inspect lower receiver and receiver extension assembly (without further disassembly) for legibility of serial number. ARMY ONLY: If the serial number is hard to read, see WP 0025 for repair. AIR FORCE ONLY: If the serial number is hard to read, evacuate to depot maintenance. NOTE See WP 0015 for repair of corroded surfaces. 5. Inspect lower receiver for corrosion in lower receiver lobes of pivot area or hinge pin area.
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TM 9-1005-319-23&P 0021 INSPECTION — ACCEPTANCE AND REJECTION CRITERIA - Continued NOTE If a weapon's lower receiver is missing one third or more of its exterior protective finish, resulting in an unprotected, light-reflecting surface, it is candidate for overhaul. This missing finish will be considered a shortcoming. This shortcoming requires action to obtain a replacement weapon. Once a replacement has been received, evacuate the original weapon to depot for overhaul. 6.
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TM 9-1005-319-23&P 0021 M16A3 and M4A1 ONLY 4 1 3 2 4 0 4 2 3 9 1 v s 1 8 6 Figure 18. Installation of Trigger Assembly (M16A3/M4A1). 4. Install trigger assembly (40), disconnector spring (42), and disconnector (41) into lower receiver and receiver extension assembly (32). 5. Install trigger pin (39) using drive pin punch. Push in until flush. 3 3 3 4 3 9 3 9 3 4 1 v s 1 8 7 Figure 19. Installation of Hammer Assembly.
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TM 9-1005-319-23&P 0021 ASSEMBLY - Continued 3 2 2 9 3 0 3 1 1 v s 1 8 8 Figure 20. Installation of Sear and Selector Lever. NOTE Hammer assembly should be cocked prior to installing the selector lever. Selector lever, if installed, must be positioned to BURST. Long leg of automatic sear spring must rest on top of selector lever. 8. Install selector lever (31) and automatic sear (29). 9.
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TM 9-1005-319-23&P 10. 0021 Install magazine catch spring (26) and magazine catch button (27). NOTE Drive pin punch should be larger than hole in magazine catch button. 11. Install magazine catch (28). Push on magazine catch button (27) using drive pin punch and turn magazine catch clockwise until threaded end of magazine catch is flush with head of magazine catch button. 2 3 2 2 2 4 2 5 1 v s 1 9 0 Figure 22. Installation of Bolt Catch. 12.
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TM 9-1005-319-23&P 0021 ASSEMBLY - Continued WARNING To avoid injury to eyes, use care when installing spring-loaded parts. NOTE Make sure hammer is cocked and selector lever is not set on BURST before installing buffer assembly. 1 9 2 0 2 1 1 v s 1 9 1 Figure 23. Installation of Action Spring and Buffer Assembly. 14. Press action spring (19) and buffer assembly (20) until buffer retainer (21) snaps up and holds them in place. 1 8 4 3 1 7 1 v s 1 9 2 Figure 24. Installation of Pivot Pin Detent.
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TM 9-1005-319-23&P 0021 NOTE Lower receivers without pivot pin detent may be used for all Air Force mission requirements. 15. Install fabricated pivot pin installation tool (43) (WP 0030, Figure 4). Insert helical spring (17) and pivot pin detent (18). Compress pivot pin detent in recess with punch and rotate tool. Remove punch. 4 3 1 6 1 8 1 v s 1 9 3 Figure 25. Installation of Pivot Pin. WARNING To avoid injury to eyes, use care when installing spring-loaded parts.
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TM 9-1005-319-23&P 0021 ASSEMBLY - Continued 8 3 2 7 1 1 1 0 6 9 1 v s 1 9 4 Figure 26. Installation of Buttstock Assembly (Rifle). RIFLE ONLY CAUTION Do not kink helical spring during assembly. 17. Visually inspect takedown pin (9), takedown pin detent (10), and helical spring (11) before installation. Install takedown pin with groove toward the rear. Install takedown pin detent and helical spring from the rear. 18.
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TM 9-1005-319-23&P 0021 CARBINE ONLY 1 2 1 4 1 3 3 2 1 v s 1 9 5 Figure 27. Installation of Buttstock Assembly (Carbine). 20. Pull down lock release lever (14) in area of retaining nut (13) and reinstall buttstock assembly (12) onto lower receiver and receiver extension assembly (32).
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TM 9-1005-319-23&P 0021 ASSEMBLY - Continued ALL WEAPONS 1 2 5 3 4 3 2 1 v s 1 9 6 Figure 28. Installation of Pistol Grip. WARNING Any screw longer than 1 1/8 inch used with enhanced rifle grip part number 9349127 could cause a hazardous situation. CAUTION Do not kink helical spring during assembly. 21. Install safety detent (4), pointed end first, and helical spring (5) into bottom of lower receiver and receiver extension assembly (32).
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TM 9-1005-319-23&P 23. 0021 Reassemble weapon; refer to TM 9-1005-319-10. END OF TASK TEST AND INSPECTION 1 v s 2 2 0 Figure 29. Use of Thickness Gage. 1. With the upper receiver attached to the lower receiver, and the pivot pin and takedown pins in place, perform the following test: a. Apply hand pressure to push the upper receiver as far to one side as possible. b. Attempt to insert a 0.020 in. thickness gage between the pivot pin lugs of the upper and lower receivers. c.
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TM 9-1005-319-23&P 0021 TEST AND INSPECTION - Continued S I D E V I E W F R O N T V I E W 0 .0 9 5 I N . (0 .2 4 C M ) B B A A 0 .0 4 5 I N . (0 .1 1 C M ) 0 .1 4 0 I N . (0 .3 6 C M ) 1 v s 1 9 7 Figure 30. Use of Trigger and Hammer Gage. NOTE If the lower receiver is not disassembled, visually inspect for broken or damaged parts, and to ensure that the hammer and trigger springs are correctly installed before beginning this test.
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TM 9-1005-319-23&P 0022 FIELD MAINTENANCE BUTTSTOCK ASSEMBLY MAINTENANCE DISASSEMBLY, CLEANING, REPAIR OR REPLACEMENT, LUBRICATION, ASSEMBLY INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) References TM 9-1005-319-10 WP 0021 WP 0039 Equipment Condition Buttstock assembly removed from lower receiver and buttstock assembly (WP 0021) DISASSEMBLY RIFLE ONLY 2 1 4 3 1 v s 1 9 8 Figure 1.
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TM 9-1005-319-23&P 0022 DISASSEMBLY - Continued 5 6 1 1 v s 1 9 9 Figure 2. Removal/Installation of Door Assembly. 2. Push down on plunger (6) and lift door assembly (5) from buttplate (1). 8 5 7 1 v s 2 0 0 Figure 3. Disassembly/Assembly of Door Assembly. 3. Remove straight pin (8) and separate hinge (7) and door assembly (5).
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TM 9-1005-319-23&P 0022 CARBINE ONLY 9 1 0 1 1 1 6 1 4 1 5 1 3 1 2 1 v s 2 0 1 Figure 4. Disassembly/Assembly of Buttstock Assembly (Carbine). 4. Tap out spring pin (12) located in oval slot of self-locking nut (13), using 1/16 in. punch. 5. Insert index finger into forward end of buttstock (11) and push down on headless shoulder pin (9). Unscrew self-locking nut (13) and remove lock release lever (14), headless shoulder pin, and helical spring (10).
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TM 9-1005-319-23&P 0022 REPAIR OR REPLACEMENT - Continued b. Cracks in the critical area at the front end of the buttstock are not acceptable and these buttstocks must be replaced. 2. While buttplate is installed on rifle, inspect for cracks around the mounting holes. Check for cracks in excess of 0.25 in. (0.64 cm) in length which extend through the buttplate. Replace if cracked. 3. Inspect door assembly for cracks, corrosion, stuck plunger, separations on outer face, or other damage.
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TM 9-1005-319-23&P 0022 CARBINE ONLY 4. Insert helical spring (10) onto headless shoulder pin (9). 5. Insert headless shoulder pin (9) and helical spring (10) into hole on top of buttstock (11), threaded end first. 6. Insert index finger into forward end of buttstock (11) and push down on headless shoulder pin (9). 7. Install lock release lever (14) onto threaded portion of headless shoulder pin (9) protruding through bottom of buttstock (11). 8.
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TM 9-1005-319-23&P 0023 FIELD MAINTENANCE HAMMER ASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Equipment Condition Hammer assembly removed (WP 0021) DISASSEMBLY 2 1 3 4 5 6 M 1 6 A 3 /M 4 A 1 M 1 6 A 2 /M 1 6 A 4 /M 4 1 v s 2 0 2 Figure 1. Disassembly of Hammer Assembly. NOTE M16A2 burst cam is black. M4 burst cam is nickel colored (shiny).
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TM 9-1005-319-23&P 0023 ASSEMBLY 2 1 4 3 6 5 M 1 6 A 3 /M 4 A 1 M 1 6 A 2 /M 1 6 A 4 /M 4 1 v s 2 0 3 Figure 2. Assembly of Hammer Assembly. NOTE M16A2 burst cam is black. M4 burst cam is nickel colored (shiny). Burst cam spring should be assembled with bend to the inside. The large loop of the hammer spring should be assembled over the burst cam (M16A2/M16A4/M4). M16A2, M16A4, and M4: Install burst cam (3), burst cam spring (2), and hammer spring (1) on hammer and hammer pin retainer assembly (4).
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TM 9-1005-319-23&P 0024 FIELD MAINTENANCE TRIGGER ASSEMBLY AND TRIGGER SUBASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Tools and Special Tools Bolt carrier key tool (WP 0039, Figure 23, item 12) Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Equipment Condition Trigger assembly removed (WP 0021) DISASSEMBLY 1 4 3 2 5 6 M 1 6 A 3 /M 4 A 1 M 1 6 A 2 /M 1 6 A 4 /M 4 1 v s 2 0 4 Figure 1.
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TM 9-1005-319-23&P 0024 REPAIR OR REPLACEMENT 1. Inspect trigger spring for kinks, deformities, and weakness. Replace if defective. 2. Inspect disconnector springs for deformities, bends, breaks, and weakness. Replace if defective. 3. Inspect trigger for chips, wear, and cracks. Inspect for damaged searing surface on the trigger nose. Replace if defective. END OF TASK ASSEMBLY M16A2, M16A4, and M4 ONLY 1 2 1 v s 2 0 5 Figure 2. Installation of Disconnector Springs (M16A2/M16A4/M4).
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TM 9-1005-319-23&P 0024 b. Place one spring (1) firmly on the tool with large diameter coils outward. c. Press spring (1) into recess to solid height. d. Hold spring (1) at solid height and slide spring into one of the holes until the punch is flush and perpendicular with the recess wall. e. Turn spring (1) one to two turns opposite of coil winding of the spring. f. Discontinue winding when an audible click or snap is heard or felt. This indicates that the spring is seated. g.
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TM 9-1005-319-23&P 0025 FIELD MAINTENANCE LOWER RECEIVER AND RECEIVER EXTENSION ASSEMBLY (M16A2) 9349101, (M16A3) 12012002, (M16A4) 12598102, (M4) 9390011, AND (M4A1) 12972690 MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, ASSEMBLY INITIAL SETUP: Tools and Special Tools Combination wrench (WP 0039, Figure 23, item 10) Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Spanner wrench (WP 0039, Figure 23, item 13) Materials/Parts Abrasive cloth (W
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TM 9-1005-319-23&P 0025 DISASSEMBLY - Continued RIFLE ONLY NOTE Use padding between lower receiver and brass vise jaws. Grip the solid portion of the lower receiver with brass vise jaws which conform to the shape of the lower receiver in this area. 4 5 6 7 2 1 v s 2 0 8 Figure 2. Removal of Lower Receiver Extension (Rifle). 3. Clamp lower receiver (2) in a machinist's vise using vise jaw caps and tighten on solid portion just tight enough to hold.
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TM 9-1005-319-23&P 0025 CARBINE ONLY NOTE Use wooden vise jaws in place of brass vise jaw caps. 8 9 1 0 1 1 1 2 1 5 1 4 1 3 2 1 v s 2 0 9 Figure 3. Removal of Lower Receiver Extension (Carbine). 5. Clamp lower receiver (2) in vise and tighten on solid portion just tight enough to hold. 6. Loosen round plain nut (9) using spanner wrench (WP 0039, figure 23, item 13). Catch headless straight pin (14) and helical spring (15).
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TM 9-1005-319-23&P 0025 REPAIR OR REPLACEMENT 5 4 6 M 1 6 A 2 1 5 8 1 4 2 M 4 1 3 9 1 0 3 1 v s 2 1 0 Figure 4. Inspection of Components. 1. Inspect lower receiver extension (4 or 8) for corrosion, dents, and wear. Repair by using abrasive cloth (WP 0045, item 13) to remove light corrosion. Retouch using solid film lubricant (WP 0045, item 20). Replace if defective. 2. Inspect buffer retainer (5) for wear. Replace if defective. 3. Inspect helical spring (6) for deformities and breaks.
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TM 9-1005-319-23&P 0025 NOTE AIR FORCE ONLY: Only depot maintenance is authorized to restamp the serial number on weapon. ARMY ONLY: Only field maintenance is authorized to restamp serial number. 1 v s 2 1 1 Figure 5. Stamping Serial Number. 8. ARMY ONLY: If serial number is hard to read on weapon, restamp as follows: a. Support the receiver in the stamping area to prevent bending and distortion of the receiver. b. Exercise extreme care to restamp the same serial number as the original. c.
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TM 9-1005-319-23&P 0025 ASSEMBLY RIFLE ONLY 5 6 2 1 v s 2 1 2 Figure 6. Installation of Buffer Retainer (Rifle). WARNING To avoid injury to your eyes, use care when installing spring-loaded parts. 1. Install helical spring (6) and buffer retainer (5) into lower receiver (2). H O L D B U F F E R R E T A I N E R 4 2 1 v s 2 1 3 Figure 7. Installation of Lower Receiver Extension (Rifle). 2.
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TM 9-1005-319-23&P 0025 7 4 1 6 2 1 v s 2 1 4 Figure 8. Torquing Lower Receiver Extension (Rifle). NOTE Use padding between lower receiver and brass vise jaws. Use vise jaws in vise and brass vise jaw caps, if available. 4. Clamp solid portion of lower receiver (2) in a machinist's vise using vise jaws. Grip solid portion of lower receiver with vise jaws which conform to the shape of lower receiver in this area. 5.
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TM 9-1005-319-23&P 0025 ASSEMBLY - Continued CARBINE ONLY 9 1 1 1 0 1 2 8 1 5 1 4 1 3 2 1 v s 2 1 5 Figure 9. Installation of Lower Receiver Extension (Carbine). 6. Lubricate threads of lower receiver (2) and lower receiver extension (8) with molybdenum disulfide grease (WP 0045, item 18) before reassembly. 7. Place helical spring (12) and buffer retainer (11) into retaining hole of lower receiver (2).
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TM 9-1005-319-23&P 0025 ALL WEAPONS 1 3 2 1 v s 2 1 6 Figure 10. Installation of Trigger Guard. 15. Install trigger guard (3) into lower receiver (2). 16. Install spring pin (1) using 1/8 in. drive pin punch and hammer.
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TM 9-1005-319-23&P 0026 FIELD MAINTENANCE ADAPTER RAIL COVER ASSEMBLIES MAINTENANCE REMOVAL, REPAIR OR REPLACEMENT, INSTALLATION INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 References WP 0039 REMOVAL 1 2 1 v s 2 1 7 Figure 1. Removal/Installation of Rail Cover. NOTE Rail covers are quickly detached from the adapter rail. A spring tension clip at one end of each rail cover automatically engages cutouts positioned at either end of the four rail sections.
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TM 9-1005-319-23&P 0026 REPAIR OR REPLACEMENT - Continued 4. Rail covers may usually be cleaned with an absorbent cloth. There is no reason to apply lubricant to the plastic surfaces of the rail covers. 5. Replace rail cover if not secure. See WP 0039. END OF TASK INSTALLATION NOTE The rail covers perform two primary functions. They are configured to protect the shooter's hands from direct skin contact with the metal parts of the adapter rail which gets hot during extended firing.
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TM 9-1005-319-23&P FIELD MAINTENANCE ANNUAL GAGING REQUIREMENTS INSPECTION, GAGING EFFECTIVITY NOTICE M16A2 RIFLE M4, M4A1 CARBINE INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Solid film lubricant (SFL) (WP 0045, item 20) References AFI 36-2226 AFTO Form 105 DA PAM 750-8 NAVMC 11003 TB 43-180 TM 1005-319-10 TO 33K-1-100-2 WP 0009 WP 0012
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TM 9-1005-319-23&P 0027 INSPECTION NOTE Inspect M16A2 rifles at least once every 2 years, after the initial inspection/gaging procedures have been accomplished. This 2 year interval may be maintained unless preventive maintenance checks and services (PMCS), or other physical evidence, indicates that an individual unit’s rifles require inspection/gaging at a more frequent interval. If it is determined that a yearly inspection is necessary for an individual unit, only that unit will be affected.
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TM 9-1005-319-23&P 0027 5. Check headspace in upper receiver and barrel assembly by inserting headspace gage PN 7799734 (WP 0044, item 2) in chamber. See WP 0015. 6. Gage pivot pin lug clearance in lower receiver assembly using 0.020-thickness gage. See WP 0021. 7. Gage hammer and trigger pinholes in lower receiver assembly using taper plug gage PN 12006472 (WP 0044, item 2). See WP 0021. 8. Gage trigger pull using trigger pull measuring fixture PN 7274758. See WP 0009. 9.
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TM 9-1005-319-23&P 0028 FIELD MAINTENANCE PREPARATION FOR STORAGE OR SHIPMENT INITIAL SETUP: References MIL-B-117 MIL-B-121 MIL-STD-129 MIL-STD-1186 PPP-B-601 PPP-B-621 PPP-B-636 PPP-B-640 PPP-C-843 PPP-F-320 PPP-T-76 SPI 00-856-6885 PACKAGING 1.
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TM 9-1005-319-23&P PACKAGING - Continued 3. NSNs are not assigned to all the specified material.
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TM 9-1005-319-23&P 0029 FIELD MAINTENANCE PRE-EMBARKATION INSPECTION OF MATERIAL IN UNITS ALERTED FOR OVERSEAS MOVEMENT INITIAL SETUP: Test Equipment Tool and Gage Set (WP 0044, item 2) Materials/Parts Penetrant kit (WP 0045, item 27) Solid film lubricant (WP 0045, item 20) References AR 725-50 SB 746-1 AMC PAM 310-9 DA PAM 750-8 DA Form 2408-9 WP 0008 WP 0009 WP 0015 NOTE This work package applies to all the weapons (M16A2, M16A3, and M16A4 Rifle and M4 and M4A1 Carbine) unless stated otherwise.
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TM 9-1005-319-23&P 0029 SCOPE - Continued 2. Provisions of this standard apply to all US Army agencies/activities selecting or preparing rifles for shipment to US troops overseas. It also applies to CONUS troops preparing rifles for shipment overseas. Provisions do not apply either to rifles being prepared for shipment to MAP/MAS recipients unless specifically prescribed by MAP/MAS transaction for the materiel or to rifle being returned to CONUS from overseas.
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TM 9-1005-319-23&P 0029 Publications Operator publications applicable to the equipment log book must accompany the equipment. All log book entries must be complete and up-to-date including those covering any repairs, replacements, or adjustments made to the rifle in complying with this section.
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TM 9-1005-319-23&P 0029 GENERAL INSPECTION CRITERIA - Continued b. M16A2 Rifle. Minor loss of finish (shiny spots, nicks, scratches) on exterior surfaces of the barrel and compensator shall not be cause for rejection of M16A2 rifles located in hands of troops at training centers. Large shiny surfaces, nicks, scratches, etc., can be restored by the use of solid film lubricant (WP 0045, item 20).
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TM 9-1005-319-23&P 0029 10. The sear, hammer, and/or cocking notches must be in good condition. Chipped engaging corners will be cause for rejection. Slight wear on functional surfaces, including engaging corners, shall be acceptable, providing the minimum trigger pull requirements and selector lever checks are met in accordance with instructions in WP 0009. 11. Chips, flat spots, or bent striker points on firing pins will be cause for rejection. 12.
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TM 9-1005-319-23&P 0029 GENERAL INSPECTION CRITERIA - Continued Table 1. 5.56mm Rifle M16A2/M16A3/M16A4, M4/M4A1 Carbine - Continued. Item Standard Front sight and gas tube ........ Inspect gas tube for proper alignment with carrier key. Gas tube must not bind when mating with the key. Evidence of gas leaks around the front sight connection of the gas tube shall be cause for rejection until rifle has been function fired to determine if the loss of gas is sufficient to cause malfunction.
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TM 9-1005-319-23&P 0029 Table 1. 5.56mm Rifle M16A2/M16A3/M16A4, M4/M4A1 Carbine - Continued. Item Standard Bolt locking lugs and bolt pin cam hole. ............................... Inspect for cracks in the locking lugs and cam pin hole area. Use a black light, if available; otherwise, use a glass of no more than 3X magnification or use inspection penetrant. Use instructions contained in inspection penetrant kit for application. If cracks are detected, the bolts will be replaced.
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TM 9-1005-319-23&P 0029 GENERAL INSPECTION CRITERIA - Continued Table 1. 5.56mm Rifle M16A2/M16A3/M16A4, M4/M4A1 Carbine - Continued. Item Standard Handguard .............................. Inspect handguard assembly for breaks, separations, and cracks. Breaks and separations of material which prevent proper retention or interfere with functioning of the weapon will be cause for handguard rejection and replacement. Cracks up to 1 in. (2.
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TM 9-1005-319-23&P 0029 Table 1. 5.56mm Rifle M16A2/M16A3/M16A4, M4/M4A1 Carbine - Continued. Item Standard M16A2 Rifle only: Under the following conditions, hairline cracks (1) originating from buttplate end of buttstock are acceptable. No chipped away material is allowed. a. One hairline crack, not to exceed 1 in. (2.54 cm) in length, per side of buttstock. b. Two additional hairline cracks up to 0.22 in. (0.55 cm) in length, per side of buttstock.
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TM 9-1005-319-23&P 0030 FIELD MAINTENANCE ILLUSTRATED LIST OF MANUFACTURED ITEMS INITIAL SETUP: Not Applicable INTRODUCTION Scope This work package includes complete instructions for making items authorized to be manufactured or fabricated at the field maintenance level. How to Use the Index of Manufactured Items A part number index in alphanumeric order is provided for cross-referencing the part number of the item to be manufactured to the page which covers fabrication criteria.
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TM 9-1005-319-23&P 0030 ILLUSTRATIONS OF MANUFACTURED ITEMS ± 0 .0 2 (0 .0 5 ) 0 .0 8 0 (0 .2 0 3 ) D I A S T K W I R E ± 0 .0 1 (0 .0 3 ) R 1 .2 5 ± 0 .0 3 (3 .1 8 ± 0 .0 8 ) 0 .6 2 5 ± 0 .0 2 0 R (1 .5 8 8 ± 0 .0 5 1 ) 0 .7 5 ± 0 .0 5 (1 .9 1 ± 0 .1 3 ) F A B R I C A T E F R O M 0 .0 8 I N . M U S I C W I R E O R E Q U I V A L E N T . F I N I S H : N O . 5 .3 .1 .2 O R 5 .3 .2 .2 O F M I L -S T D 1 7 .
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TM 9-1005-319-23&P 4 (1 0 .1 6 ) 0030 3 /3 2 (0 .2 4 ) 5 /1 6 I N C H D R I L L T I P 0 .3 6 8 (0 .9 3 ) 2 5 /1 6 (0 .7 9 ) (5 .0 8 ) F O U R E Q U A L L Y S P A C E D T E E T H 1 /8 (0 .3 2 ) 1 /1 6 (0 .1 6 ) 5 /1 6 (0 .7 9 ) 0 .0 7 0 I N . (0 .1 8 C M ) W I D E F A B R I C A T E F R O M 0 .3 7 5 I N . R O U N D M E T A L B A R , A S T M A 6 8 6 , F S C M 8 1 3 4 6 , G R A D E C , C L A S S W 2 -0 9 , N S N 9 5 1 0 -0 0 -6 4 0 -4 4 0 7 O R E Q U I V A L E N T . N O T E 1 . A L L W I T H 2 .
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TM 9-1005-319-23&P 0030 ILLUSTRATIONS OF MANUFACTURED ITEMS - Continued 1 /4 (0 .6 4 ) F A B R I C A T E F R O M 1 /1 6 I N . S O C K E T H E A D N S N 5 1 2 0 -0 0 -1 9 8 -5 3 9 8 O R E Q U I V A L E N T . S C R E W N O T E : A L L D I M E N S I O N S S H O W N A R E I N I N C H E S W I T H M E T R I C C O N V E R S I O N T O C E N T I M E T E R S I N K E Y , P A R E N T H E S E S . 1 V S 2 9 3 Figure 3. Pivot Pin Removal Tool.
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TM 9-1005-319-23&P 0030 2 .5 0 ± 0 .0 5 (6 .3 5 ± 0 .1 3 ) 2 5 0 6 3 1 1 /2 (3 .8 1 ) M I N A 0 .0 0 5 (0 .0 1 3 ) M A X B O W F O R A L E N G T H 1 /8 (0 .3 1 8 ) 1 .5 0 - 0 .0 5 (3 .8 1 - 0 .1 3 ) A A 0 .2 5 ± 0 .0 5 R (0 .6 4 ± 0 .1 3 ) B 0 .0 1 (0 .0 2 5 ) R M A X O R 0 .0 1 (0 .0 2 5 ) x 4 5 M A X C H A M F E R 0 .2 4 5 + 0 .0 0 0 D I A S T O C K -0 .0 0 4 (0 .6 2 2 + 0 .0 0 0 ) -0 .0 1 0 ) S E C T I O N B A -A 0 .0 0 5 (0 .0 1 3 ) T O T A L 0 .0 9 8 + 0 .0 4 D I A T H R U -0 .
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TM 9-1005-319-23&P 0030 ILLUSTRATIONS OF MANUFACTURED ITEMS - Continued V IE W A 0 .6 2 5 (1 .5 8 8 ) V IE W B 0 .1 5 4 0 - 0 .0 0 0 5 (0 .3 9 1 2 - 0 .0 1 2 7 ) 0 .6 2 5 (1 .5 8 8 ) F A B R I C A T E F R O M O L D T R I G G E R P I N (V I E W A ) P N 8 4 4 8 6 0 9 O R F A B R I C A T E S L A V E P I N (V I E W B ) F R O M M A T E R I A L B L O C K , W I R E , S T E E L A L L O Y , G R A D E 4 1 4 0 , A S T M -A 5 4 7 O R E Q U I V A L E N T .
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TM 9-1005-319-23&P 3 5 7 /8 (9 1 .1 2 ) 1 1 /4 (3 .1 7 5 ) 0030 1 /8 (.3 2 ) 1 1 /4 (3 .1 7 5 ) 4 5 ° 4 5 ° 1 1 /2 (3 .8 1 ) 1 1 /2 (3 .8 1 ) F A B A N G P A I N 8 0 1 0 R I C L E T -0 1 A T E I R O N W I T H -3 5 0 -5 F R O , N O L 2 4 9 M 1 1 S N 9 5 I V E D O R E /2 2 0 R Q I N -0 0 A B U I V . B Y -2 7 7 E N A A L E 1 1 /2 I N . B Y 1 /8 I N . -4 9 0 2 O R E Q U I V A L E N T . M E L P A I N T , N S N N T .
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TM 9-1005-319-23&P 0030 ILLUSTRATIONS OF MANUFACTURED ITEMS - Continued 0 .0 6 2 5 + 0 .0 1 5 D I A 7 5 ° + 5 ° 0 .2 5 0 + 0 .0 6 2 5 F A B R I C A T E F R O M N E E D L E N O S E P L I E R S , N S N 5 1 2 0 -0 0 -2 6 8 -3 5 7 9 O R E Q U I V A L E N T . N O T E : A L L D I M E N S I O N S S H O W N A R E I N I N C H E S . Figure 7. Modified Needle Nose Pliers.
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TM 9-1005-319-23&P CHAPTER 4 AUXILIARY EQUIPMENT MAINTENANCE INSTRUCTIONS FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
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TM 9-1005-319-23&P 0031 FIELD MAINTENANCE AUXILIARY EQUIPMENT INITIAL SETUP: References WP 0042 AUXILIARY EQUIPMENT The following items of auxiliary equipment are used in conjunction with the weapons: 1. 40mm Grenade Launcher M203, NSN 1010-00-179-6447 (Rifle Only). 2. 40mm Grenade Launcher M203A1, NSN 1010-01-434-9028 (Carbine Only). 3. 40mm Grenade Launcher M203A2, NSN 1010-01-495-8511 (M16A3/M16A4 Rifle or Carbine Only). 4. Conversion Kit, M261 (caliber .
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TM 9-1005-319-23&P AUXILIARY EQUIPMENT - Continued 19. Tactical Sling, NSN 1005-01-541-1771. 20. Cleaning Kit, NSN 1005-01-558-7980. 21. Forward Rail Bracket, NSN 1005-01-541-2476. 22. Multi-mag Holder, NSN 1005-01-541-2477. 23. Forward Grip Bipod, NSN 1005-01-541-1772. 24. Lock Plate, NSN 1005-00-233-9031. 25. Top Sling Adapter, NSN 1005-00-406-1570. 26. Close Quarters Battle Sling Kit, NSN 1005-01-478-0848. 27. Blank Firing Attachment M15A2, NSN 1005-00-118-6192 (Rifle Only). 28.
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TM 9-1005-319-23&P FIELD MAINTENANCE LOCK PLATE MAINTENANCE INSTALLATION, REPAIR OR REPLACEMENT, REMOVAL INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 0032-1 0032
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TM 9-1005-319-23&P 0032 WARNING The lock plate prevents the selector lever from being placed in BURST and will be installed at the discretion of the unit commander. It is mandatory for use in civil disturbance (riot control). INSTALLATION 2 1 3 3 4 1 v s 3 0 1 Figure 1. Removing Pistol Grip for Lock Plate Installation. 1. Using a screwdriver, reach inside pistol grip (3) and remove screw (2) and lockwasher (1).
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TM 9-1005-319-23&P 0032 4 5 4 5 1 v s 3 0 2 Figure 2. Installing Lock Plate. 3. Install lock plate (5) with the detent helical spring (4) passing through the hole in the right side of the lock plate and the arm on the outside of the receiver. The selector lever must point to the SAFE position. 4 3 1 v s 3 0 3 Figure 3. Positioning Pistol Grip with Lock Plate Installed. 4. Carefully compress detent helical spring (4) and position pistol grip (3).
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TM 9-1005-319-23&P 0032 INSTALLATION - Continued 2 1 3 1 v s 3 0 4 Figure 4. Securing Pistol Grip with Lock Plate Installed. 5. Using screwdriver, secure pistol grip (3) by installing lockwasher (1) and screw (2). END OF TASK REPAIR OR REPLACEMENT Inspect lock plate for serviceability and broken arm. Replace if unserviceable or if arm is broken. END OF TASK REMOVAL 2 1 3 3 4 1 v s 3 0 1 Figure 5. Removing Pistol Grip for Lock Plate Removal.
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TM 9-1005-319-23&P 1. 0032 Using a screwdriver, reach inside pistol grip (3) and remove screw (2) and lockwasher (1). WARNING To avoid injury to your eyes, use care when removing or installing springloaded parts. 2. Carefully remove pistol grip (3). Hold detent helical spring (4) in place. 4 5 4 5 1 v s 3 0 2 Figure 6. Removing Lock Plate. 3. Remove lock plate (5) while continuing to hold the detent helical spring (4) in place. The selector lever must point to the SAFE position.
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TM 9-1005-319-23&P 0032 REMOVAL - Continued 4 3 1 v s 3 3 0 Figure 7. Positioning Pistol Grip with Lock Plate Removed. 4. Carefully compress detent helical spring (4) and position pistol grip (3). 2 1 3 1 v s 3 0 4 Figure 8. Securing Pistol Grip with Lock Plate Removed. 5. Using screwdriver, secure pistol grip (3) by installing lockwasher (1) and screw (2).
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TM 9-1005-319-23&P 0033 FIELD MAINTENANCE TOP SLING ADAPTER MAINTENANCE INSTALLATION, REPAIR OR REPLACEMENT, REMOVAL INITIAL SETUP: Materials/Parts Top sling adapter kit, PN 8448471 References TM 9-1005-319-10 Equipment Conditions Sling removed (TM 9-1005-319-10) INSTALLATION 1 2 R I F L E 1 3 C A R B I N E 1 v s 3 0 5 Figure 1. Installing Top Sling Adapter. 1. Rifle Only: Install top sling adapter strap (1) through sling swivel (2) and tie. 2.
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TM 9-1005-319-23&P 0033 INSTALLATION - Continued 4 5 6 1 v s 3 0 6 Figure 2. Installing Clamp on Front Sight. 3. Remove upper handguard assembly (4). Refer to TM 9-1005-319-10. 4. Use pliers to install clamp (5) on front sight base (6). 7 7 1 5 4 1 v s 3 0 7 Figure 3. Attaching Sling to Top Sling Adapter and Clamp. 5. Attach sling (7) to top sling adapter strap (1) and to clamp (5).
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TM 9-1005-319-23&P 0033 6. Install upper handguard assembly (4). Refer to TM 9-1005-319-10. 7. Adjust sling (7). END OF TASK REPAIR OR REPLACEMENT Visually inspect top sling adapter strap and replace if it is badly worn or damaged. END OF TASK REMOVAL 7 7 4 1 5 1 v s 3 0 8 Figure 4. Removing Sling from Clamp and Top Sling Adapter. 1. Remove upper handguard assembly (4). Refer to TM 9-1005-319-10. 2. Remove sling (7) from clamp (5) and top sling adapter strap (1).
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TM 9-1005-319-23&P 0033 REMOVAL - Continued 5 6 1 v s 3 0 9 Figure 5. Removing Clamp from Front Sight. 3. Use pliers to remove clamp (5) from front sight base (6). 4 1 v s 3 1 0 Figure 6. Attaching Sling to Top Sling Adapter and Clamp. 4. Install upper handguard assembly (4). Refer to TM 9-1005-319-10.
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TM 9-1005-319-23&P 0033 1 1 3 2 R I F L E C A R B I N E 1 v s 3 1 1 Figure 7. Removing Top Sling Adapter. 5. Untie top sling adapter (1) and remove from sling swivel (2) or sling opening (3). Use pliers to remove clamp (5) from front sight base (6). 6. Install sling. Refer to TM 9-1005-319-10.
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TM 9-1005-319-23&P FIELD MAINTENANCE CLOSE QUARTERS BATTLE SLING MAINTENANCE INSTALLATION, REPAIR OR REPLACEMENT INITIAL SETUP: Tools and Special Tools Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Close quarters combat sling adapter kit, PN 12956271 0034-1 0034
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TM 9-1005-319-23&P 0034 INSTALLATION 1 2 R I F L E O N L Y 1 v s 3 1 2 Figure 1. Removing Sling Swivel. 1. Knock out tubular rivet (2) with a hammer and punch and remove small sling swivel (1). Discard tubular rivet. 3 C A R B I N E O N L Y 1 v s 3 1 3 Figure 2. Removing Two Spring Pins. 2. Using hammer and punch, remove two spring pins (3). Discard spring pins.
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TM 9-1005-319-23&P 0034 4 5 C A R B I N E O N L Y 1 v s 3 1 4 Figure 3. Removing Swivel Locking Bar. 3. Lift swivel locking bar (4) up and out of swivel mount (5). 5 C A R B I N E O N L Y 1 v s 3 1 5 Figure 4. Removing Swivel Mount. 4. Remove swivel mount (5). 6 1 v s 3 1 6 Figure 5. Installing Barrel Band. 5. Install barrel band (6) under front sight post.
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TM 9-1005-319-23&P 0034 INSTALLATION - Continued B A R R E L B A N D B A R R E L N U T L A N Y A R D A S S Y S O C K E T H E A D C A P S C R E W 1 v s 3 1 7 Figure 6. Attaching Lanyard Assembly. 6. Attach lanyard assembly to the barrel band using supplied hardware, 7/64 in. hex key wrench, and pliers. 7 8 1 v s 3 1 8 Figure 7. Attaching Rear Sling Adapter. 7. Put the rear loop (7) around the buttstock and pass the loop lock through the swivel exactly as shown in Figure 7. 8.
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TM 9-1005-319-23&P 9 0034 1 0 1 v s 3 2 0 Figure 9. Attaching Sling to Quick Release Swivel. 10. Attach end of standard sling (9) to quick release swivel (10) as shown in Figure 9. 1 0 1 0 1 v s 3 2 1 Figure 10. Attaching Swivel to Lanyard. 11. Attach swivel (10) to lanyard assembly. Unscrew nut counterclockwise while pulling outward, stopping when resistance is felt. Push inward on plastic nut and rotate plate a quarter turn. 1 0 9 1 v s 3 2 2 Figure 11. Securing Swivel and Lanyard. 12.
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TM 9-1005-319-23&P FIELD MAINTENANCE BLANK FIRING ATTACHMENT MAINTENANCE INSTALLATION, REPAIR OR REPLACEMENT, REMOVAL INITIAL SETUP: Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Paint, enamel (Red Rifles) (WP 0045, item 24) Paint, enamel (Yellow Carbines) (WP 0045, item 25) WARNING Do not keep live ammunition near work area. Only blank cartridge M200 is to be used when the blank firing attachment is attached to the rifle/carbine.
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TM 9-1005-319-23&P 0035 INSTALLATION - Continued 2 3 1 v s 3 2 4 Figure 2. Placing Blank Firing Attachment. 2. Hook blank firing attachment (2) behind the first groove of the compensator (3). 1 3 1 v s 3 2 5 Figure 3. Securing Blank Firing Attachment. CAUTION Do not use tools to tighten the blank firing attachment. Use hands only. 3. Push slide (1) into compensator (3) and hand tighten. NOTE Check for tightness after firing approximately 50 blank rounds. END OF TASK REPAIR OR REPLACEMENT 1.
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TM 9-1005-319-23&P 0035 3. Repaint blank firing attachment using enamel paint. Use red (WP 0045, item 24) for M16A2, M16A3, and M16A4 rifles or yellow (WP 0045, item 25) for M4 and M4A1 carbines. Painting is the only repair authorized. 4. Replace blank firing attachment if unserviceable. END OF TASK REMOVAL CAUTION Do not use tools to tighten the blank firing attachment. Use hands only. 1 3 1 v s 3 2 6 Figure 4. Unscrewing Slide from Compensator. 1.
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TM 9-1005-319-23&P REMOVAL - Continued 1 2 1 v s 3 2 8 Figure 6. Securing Slide in Blank Firing Attachment. 3. Screw slide (1) all the way in on blank firing attachment (2).
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TM 9-1005-319-23&P 0036 FIELD MAINTENANCE M12 STORAGE RACK MAINTENANCE INSTALLATION INITIAL SETUP: Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Adapter bar (WP 0030, Figure 6) Machine screw (2) (MS35206-315) Mounting bracket (WP 0045, item 23) Nut (2) (MS35649-2382) Olive drab enamel (WP 0045, item 16) Rail protector (WP 0045, item 29) Washer (4) (MS27183-15) INSTALLATION M4/M4A1 Carbine Only: 1.
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TM 9-1005-319-23&P 0036 INSTALLATION - Continued M A R K C E N T E R L I N E O F L E G A N D A D A P T E R B A R 1 2 1 v s 3 2 9 Figure 1. Installing Adapter Bar on M12 Storage Rack.
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TM 9-1005-319-23&P 0036 b. The side of the adapter bar with the cut off corners (1) is the top and the side with the square corners (2) is the back. The portion of the bar must be placed so the cut corners face the front of the M12 storage rack. c. Holding the adapter bar at an angle, place one end into position inside the rear leg of the M12 storage rack. Lower the other end of the bar into position. Allow the adapter bar to rest on the M12 storage rack. d.
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TM 9-1005-319-23&P 0036 INSTALLATION - Continued M16A4 Rifle and M4/M4A1 Carbine: NOTE Organizations that are having difficulty securing the M16A4 rifle with M5 adapter rail system mounted or M4/M4A1 carbine with M4 adapter rail system mounted are authorized the following minor alteration to the M12 storage rack.
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TM 9-1005-319-23&P 0036 A p p r o x im a te ly 3 5 3 /4 in . C u t le n g th fo r b e s t fit fo r e a c h r a c k . 1 in . A p p r o x im a te ly L o c k H o le 3 /8 in . W h e n d r illin g t h e 3 /8 in . lo c k h o le , le a v e a s m u c h m e ta l in ta c t a t th is lo c a t io n a s p o s s ib le (1 /8 in . m in im u m ). Figure 2. Fabrication of Locking Bar. END OF TASK END OF WORK PACKAGE 0036-5/6 blank 1 in .
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TM 9-1005-319-23&P FIELD MAINTENANCE CARRYING HANDLE ASSEMBLY MAINTENANCE DISASSEMBLY, REPAIR OR REPLACEMENT, LUBRICATION, ASSEMBLY, TEST AND INSPECTION EFFECTIVITY NOTICE M16A3, M16A4 RIFLE M4, M4A1 CARBINE INITIAL SETUP: Tools and Special Tools Small Arms Shop Set: Field Maintenance, Basic, Less Power, SC 4933-95-A11 Small Arms Tool Kit, SC 5180-95-B71 Materials/Parts Cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) Index screw 9349065 Solid film lubricant (WP 0045, item 20) References WP 003
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TM 9-1005-319-23&P 0037 DISASSEMBLY 2 3 1 4 R 1 1 5 1 0 6 9 7 8 1 v s 2 2 1 Figure 1. Disassembly of Carrying Handle Assembly. WARNING To avoid injury to eyes, use care when removing spring-loaded parts. 1. Drive out spring pin (8) using a 3/32 in. punch. Catch helical spring (7) when punch is withdrawn. 2. Rotate elevating mechanism (1) until rear sight assembly (3) clears gun carrying handle (6). Catch ball bearing (5) and helical spring (4). 3.
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TM 9-1005-319-23&P 0037 4. Check rear sight assembly for serviceability. Clear drain holes for springs. Threaded portion of rear sight assembly and knob should be well formed. 5. Inspect rear sight guards for bends; if bent, repair as follows: 1 2 1 2 1 3 1 v s 2 2 2 Figure 2. Straightening Rear Sight Guards. a. Place carrying handle assembly (13) in a vise using jaw clamps. Tighten vise. b. Using two adjustable wrenches, gradually bend guards (12) to straighten.
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TM 9-1005-319-23&P 0037 LUBRICATION Lubricate rear sight assembly. Apply cleaner, lubricant, and preservative (CLP) (WP 0045, item 9) to helical springs and ball bearings and threaded portion of index screw before installation. Lubricate helical springs and ball bearings through their respective drain holes. END OF TASK ASSEMBLY 2 1 1 1 1 0 1 4 9 6 1 v s 2 2 3 Figure 3. Assembly and Installation of Elevation Knob Assembly. 1.
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TM 9-1005-319-23&P 0037 WARNING To avoid injury to eyes, use care when installing spring-loaded parts. 3 4 R 5 6 1 4 1 v s 2 2 4 Figure 4. Installation of Rear Sight Assembly. 4. Install helical spring (4) and ball bearing (5). 5. Insert threaded portion of rear sight assembly (3) into gun carrying handle (6) and rotate elevation knob assembly (14) until threads engage. 6. Rotate elevation knob assembly (14) until rear sight assembly (3) is all the way down.
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TM 9-1005-319-23&P 0037 ASSEMBLY - Continued 1 5 8 6 1 4 7 3 1 v s 2 2 5 Figure 5. Installation of Helical Spring. CAUTION Ensure that spring pin passes over helical spring, not through its coils. 7. Insert helical spring (7) through underside of gun carrying handle (6). Compress helical spring with a small tip screwdriver (15) to install spring pin (8). Spring pin must pass over helical spring, not through its coils.
PAGE 317
TM 9-1005-319-23&P c. 0037 If 300 meter mark is not aligned with mark on carrying handle assembly, slip range scale in the following manner: (1) Position 300 meter mark with mark on carrying handle assembly. (2) Insert a 1/16 in. key wrench through access hole of rear sight assembly and into index screw. (3) Loosen index screw three turns and leave wrench in place. (4) Rotate lower portion of knob counterclockwise until it stops (range scale should not have moved).
PAGE 318
PAGE 319
TM 9-1005-319-23&P CHAPTER 5 PARTS INFORMATION FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
PAGE 320
PAGE 321
TM 9-1005-319-23&P 0038 FIELD MAINTENANCE INTRODUCTION TO REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) INTRODUCTION SCOPE This RPSTL lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic equipment (TMDE); and other special support equipment required for performance of field maintenance of the M16 series rifles and the M4 series carbines.
PAGE 322
TM 9-1005-319-23&P 0038 EXPLANATION OF COLUMNS IN THE REPAIR PARTS LIST AND SPECIAL TOOLS LIST WORK PACKAGES - Continued Table 1. SMR Code Explanation. Source Code Maintenance Code ___ xx ___ 1st two positions: How to get an item. Recoverability Code ___ xx ___ 3rd position: Who can install, replace, or use the item. ___ x ___ 4th position: Who can do complete repair* on the item. 5th position: Who determines disposition action on unserviceable items.
PAGE 323
TM 9-1005-319-23&P Application/Explanation Source Code AOAFAHALADAG- 0038 Assembled by unit/AMC level Assembled by DS/ASB level Assembled by sustainment level Assembled by SRA/TASMG Assembled by depot Navy only XA Items with these codes are not to be requested/requisitioned individually. The parts that make up the assembled item must be requisitioned or fabricated and assembled at the level of maintenance indicated by the source code.
PAGE 324
TM 9-1005-319-23&P 0038 EXPLANATION OF COLUMNS IN THE REPAIR PARTS LIST AND SPECIAL TOOLS LIST WORK PACKAGES - Continued Fourth Position. The maintenance code entered in the fourth position tells you whether or not the item is to be repaired and identifies the lowest maintenance level with the capability to do complete repair (perform all authorized repair functions).
PAGE 325
TM 9-1005-319-23&P Recoverability Code 0038 Application/Explanation G - K - Field level reparable item. Condemn and dispose at either afloat or ashore intermediate levels (Navy only). Reparable item. Condemnation and disposal to be performed at contractor facility. NSN (Column (3)). The NSN for the item is listed in this column. CAGEC (Column (4)).
PAGE 326
TM 9-1005-319-23&P 0038 EXPLANATION OF CROSS-REFERENCE INDEXES WORK PACKAGES FORMAT AND COLUMNS 1. National Stock Number (NSN) Index Work Package. NSNs in this index are listed in National Item Identification Number (NIIN) sequence. STOCK NUMBER Column. This column lists the NSN in NIIN sequence. The NIIN consists of the last nine digits of the NSN. When using this column to locate an item, ignore the first four digits of the NSN.
PAGE 327
TM 9-1005-319-23&P 0038 HOW TO LOCATE REPAIR PARTS 1. When NSNs or Part Numbers Are Not Known. First. Using the table of contents, determine the assembly group to which the item belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and lists are divided into the same groups. Second. Find the figure covering the functional group or the subfunctional group to which the item belongs. Third. Identify the item on the figure and note the number(s). Fourth.
PAGE 328
PAGE 329
TM 9-1005-319-23&P FIELD MAINTENANCE RIFLE, 5.56MM (M16A2) 9349000; RIFLE, 5.56MM (M16A3) 12012000; RIFLE, 5.56MM (M16A4) 12973001; CARBINE, 5.56MM (M4) 9390000; AND CARBINE, 5.
PAGE 330
TM 9-1005-319-23&P 0039 7 1 2 3 A 3 4 8 6 6 B 6 A M 1 6 A 3 /M 1 6 A 4 R I F L E 5 1 2 M 1 6 A 2 R I F L E 7 3 B 3 C 8 6 C 4 6 D 5 A M 4 /M 4 A 1 C A R B I N E Figure 1. Rifle, 5.56mm (M16A2) 9349000; Rifle, 5.56mm (M16A3) 12012000; Rifle, 5.56mm (M16A4) 12973001; Carbine, 5.56mm (M4) 9390000; and Carbine, 5.56mm (M4A1) 12972700.
PAGE 331
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 00 FIG. 1 1 2 3 3A 3B 3C 4 PAFFF 1005-00-017-9546 19204 AFFFF AFFFF AFFFF AFFFF AFFFF 19200 19200 19200 19200 19200 PACZZ 1005-00-921-5004 19200 8448517 13004788 9349050 12973010 12972680 12997148 8448670 0039-3 RIFLE, 5.56MM (M16A2) 9349000; RIFLE, 5.56MM (M16A3) 12012000; RIFLE, 5.56MM (M16A4) 12973001; CARBINE, 5.
PAGE 332
TM 9-1005-319-23&P (1) ITEM NO. 5 5A 6 6A 6B 6C 6D 7 8 (2) SMR CODE (3) (4) NSN CAGEC PACZZ 1005-01-216-4510 19204 (5) PART NUMBER 12624561 (6) DESCRIPTION AND USABLE ON CODE (UOC) SLING, SMALL ARMS (M16A2, M16A3, M16A4)...................... UOC:AR8, AW4, AZ1 PACZZ 1005-01-368-9852 19200 12011996 SLING, SMALL ARMS (M4, M4A1) .... UOC:AS1, AY6 XAFFA 9349100 LOWER RECEIVER AND BUTTSTOCK ASSEMBLY (M16A2) (FOR ASSY BREAKDOWN SEE FIG. 15) ..................................................
PAGE 333
PAGE 334
TM 9-1005-319-23&P 0039 1 3 1 3 1 1 2 1 2 7 6 1 0 7 4 6 5 8 9 1 v s fig 0 2 Figure 2. Back-up Iron Sight Assembly (M16A3, M16A4, M4, M4A1) 12996812.
PAGE 335
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 01 FIG. 2 BACK-UP IRON SIGHT ASSEMBLY (M16A3, M16A4, M4, M4A1) 12996812 1 PAFZZ 1005-01-497-2592 19200 12996813 FRAME, ASSEMBLY ............................ 1 2 PAFZZ 5340-01-484-7999 19200 12996823 BAR, LOCKING..................................... 1 3 PAFZZ 5305-01-484-7075 19200 12996824 SCREW, RECOIL ..................................
PAGE 336
TM 9-1005-319-23&P 0039 1 2 3 4 5 1 v s fig 0 3 Figure 3. Bolt and Bolt Carrier Assembly 13004788.
PAGE 337
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 02 FIG. 3 BOLT AND BOLT CARRIER ASSEMBLY 13004788 1 PAFZZ 1005-00-017-9547 19204 8448503 PIN, FIRING.......................................... 1 2 PAFZZ 1005-00-999-1509 19204 8448504 PIN, FIRING PIN RETAINING ........... 1 3 PAFZZ 5315-00-992-7294 19204 8448502 PIN, GROOVED, HEADED BOLT CAM.............................................
PAGE 338
TM 9-1005-319-23&P 0039 1 3 2 4 5 8 6 7 1 v s fig 0 4 Figure 4. Breech Assembly Bolt 13004787.
PAGE 339
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0201 FIG. 4 BREECH ASSEMBLY BOLT 13004787 1 PAFZZ 1005-00-992-7287 19204 8448511 RING, BOLT .......................................... 3 2 XAFZZ 19204 8448510 BOLT ...................................................... 1 3 PAFZZ 1005-00-992-7290 19204 8448513 PIN, EXTRACTOR ................................
PAGE 340
PAGE 341
TM 9-1005-319-23&P 0039 1 2 3 1 v s fig 0 5 Figure 5. Key and Bolt Carrier Assembly 8448505. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0202 FIG. 5 KEY AND BOLT CARRIER ASSEMBLY 8448505 1 PAFZZ 5305-00-992-7284 19204 8448508 SCREW, CARRIER KEY....................... 2 2 PAFZZ 1005-00-992-7283 19200 8448506 KEY, BOLT CARRIER .......................... 1 3 XAFZZ 19200 8448507 CARRIER, BOLT ...............
PAGE 342
TM 9-1005-319-23&P 0039 1 2 3 4 1 v s fig 0 6 Figure 6. Charging Handle Assembly 8448517. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 03 FIG. 6 1 PAFZZ 5315-01-048-9372 19204 8448521-2 CHARGING HANDLE ASSEMBLY 8448517 PIN, SPRING, CHARGING HANDLE ................................................ 1 2 PAFZZ 5342-00-999-0405 19200 8448519 LATCH, CHARGING HANDLE ...........
PAGE 343
TM 9-1005-319-23&P 0039 1 2 3 4 1 0 9 8 5 6 7 2 M 1 6 A 2 R I F L E 1 A 1 1 3 1 0 9 4 A 8 5 6 7 1 2 1 3 M 1 6 A 3 /M 1 6 A 4 R I F L E 1 v s fig 0 7 a Figure 7. Upper Receiver and Barrel Assembly (M16A2) 9349050, (M16A3, M16A4) 12973010, and (M4, M4A1) 12972680 (Sheet 1 of 2).
PAGE 344
TM 9-1005-319-23&P 0039 4 C 1 B 1 4 M 4 A 1 O N L Y 3 A 4 B 1 0 9 5 6 8 7 1 5 M 4 /M 4 A 1 C A R B I N E 1 v s fig 0 7 b Figure 7. Upper Receiver and Barrel Assembly (M16A2) 9349050, (M16A3, M16A4) 12973010, and (M4, M4A1) 12972680 (Sheet 2 of 2).
PAGE 345
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 04 FIG.
PAGE 346
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY 5 PAFZZ 5310-01-475-9652 19200 12991533 WASHER, RECESSED ......................... 1 6 PAFZZ 1005-01-134-3633 19200 9349051 COMPENSATOR................................... 1 7 PAFZZ 5315-00-058-6044 80205 MS16562-106 PIN, SPRING, GAS TUBE.................... 1 8 PAFZZ 1005-00-087-8998 19204 8448712 RING, SLIP, HANDGUARD.................
PAGE 347
PAGE 348
TM 9-1005-319-23&P 0039 1 2 3 6 5 4 M 1 6 A 2 /M 1 6 A 3 /M 1 6 A 4 R I F L E 1 2 3 6 B M 4 A 1 7 6 A 8 5 M 4 A N D M 4 A 1 C A R B I N E 9 4 1 v s fig 0 8 Figure 8. Barrel Assembly (M16A2) 9349124, Barrel Assembly (M16A3, M16A4) 12598107, Replacement Barrel and Front Sight Assembly (M4) 9390007, and Replacement Barrel and Front Sight Assembly (M4A1) 12991851.
PAGE 349
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0401 FIG. 8 BARREL ASSEMBLY (M16A2) 9349124, (M16A3, M16A4) 12598107, AND REPLACEMENT BARREL AND FRONT SIGHT ASSEMBLY (M4) 9390007, (M4A1) 12991851 1 PAFZZ 1005-01-134-3625 19200 9349056 POST, FRONT SIGHT .......................... 1 2 PAFZZ 5315-00-979-3930 19204 8448573 PIN, SHOULDER, HEADLESS (DETENT, FRONT SIGHT) ..................
PAGE 350
PAGE 351
TM 9-1005-319-23&P 2 1 3 F L A C A N O N E W S T S 0039 N T S P R N L Y Y L E S P A C E O T E I N G B E U P E C R (I T (I T S E I A L E M D E M 4 ) W I T H S H A P E D 5 ). 4 6 5 1 v s fig 0 9 Figure 9. Upper Handguard Assembly (M16A3, M16A4) 12973021. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0402 FIG.
PAGE 352
TM 9-1005-319-23&P 0039 2 1 2 1 v s fig 1 0 Figure 10. Barrel Stop Assembly (M16A3, M16A4) 12973139. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0403 FIG. 10 BARREL STOP ASSEMBLY (M16A3, M16A4) 12973139 1 XAFZZ 19200 12973034 BARREL STOP ...................................... UOC:AW4, AZ1 2 PAFZZ 5360-01-452-9636 19200 12973035 HELICAL COMPRESSION SPRING..................................................
PAGE 353
TM 9-1005-319-23&P 1 2 3 F L A C A N O N E W S T S 0039 N T S P R N L Y Y L E S P A C E O T E I N G B E U P E C R (I T (I T S E I A L E M D E M 4 ) W I T H S H A P E D 5 ). 4 6 5 1 v s fig 1 1 Figure 11. Upper Handguard Assembly (M4, M4A1) 12973096. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 0404 FIG. 11 UPPER HANDGUARD ASSEMBLY (M4, M4A1) 12973096 1 PAFZZ 1005-01-453-4226 19200 12973027 REAR HANDGUARD CLAMP .
PAGE 354
TM 9-1005-319-23&P 0039 2 1 3 1 6 4 5 1 5 6 1 4 1 1 1 3 1 2 7 1 0 9 8 M 1 6 A 2 6 A 6 B 1 4 1 3 1 1 7 1 0 9 8 M 1 6 A 3 /M 1 6 A 4 /M 4 /M 4 A 1 1 v s fig 1 2 Figure 12. Upper Receiver Assembly (M16A2) 9349062, (M16A3, M16A4) 12973011, and (M4, M4A1) 12972675.
PAGE 355
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 0405 FIG. 12 UPPER RECEIVER ASSEMBLY (M16A2) 9349062, (M16A3, M16A4) 12973011, AND (M4, M4A1) 12972675 1 PAFZZ 1005-01-134-3621 19200 9349066 INDEX, ELEVATION (M16A2) .................................................. UOC:AR8 2 PAFZZ 5305-01-134-3622 19200 9349065 SCREW, INDEX (M16A2).....................
PAGE 356
TM 9-1005-319-23&P (1) ITEM NO. 14 15 16 (2) SMR CODE (3) (4) NSN CAGEC PAFFF 1005-01-442-0160 19200 PAFZZ PAFZZ 5360-01-134-3710 19200 5355-01-135-4972 19200 (5) PART NUMBER 9349086 9349070 9349067 (6) DESCRIPTION AND USABLE ON CODE (UOC) QTY FORWARD ASSIST ASSEMBLY (FOR ASSEMBLY BREAKDOWN SEE FIG. 13) .......................................... 1 (7) SPRING, HELICAL, COMPRESSION, ELEVATION (M16A2) .......................... UOC:AR8 1 KNOB, ELEVATION (M16A2) .........................
PAGE 357
TM 9-1005-319-23&P 0039 1 2 3 4 5 1 v s fig 1 3 Figure 13. Forward Assist Assembly 9349086. (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY GROUP 040501 FIG. 13 FORWARD ASSIST ASSEMBLY 9349086 1 XAFZZ 19200 9349085 PLUNGER ASSEMBLY........................ 1 2 PAFZZ 5315-01-048-9372 19204 8448521-2 PIN, SPRING, PAWL ............................
PAGE 358
TM 9-1005-319-23&P 3 2 A 1 0039 2 4 5 6 8 5 4 7 Figure 14. Rear Sight Assembly (M16A2) 9349072 and (M16A3, M16A4, M4, M4A1) 12951026.
PAGE 359
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 040502 FIG. 14 REAR SIGHT ASSEMBLY (M16A2) 9349072 AND (M16A3, M16A4, M4, M4A1) 12951026 1 PAFZZ 5315-00-058-6678 96906 MS16562-103 PIN, SPRING, WINDAGE .................... 1 2 PAFZZ 1005-01-134-3631 19200 9349074 BASE, REAR SIGHT............................. UOC:AR8 1 2A PAFZZ 1005-01-382-7086 19200 12951028 BASE, REAR SIGHT...................
PAGE 360
PAGE 361
TM 9-1005-319-23&P 0039 3 A 2 1 3 3 0 ,3 0 A ,3 0 B 2 9 8 4 5 9 7 6 1 1 1 0 1 2 2 6 2 7 2 8 1 1 2 5 2 4 1 7 1 2 1 3 1 6 1 6 A 2 3 1 5 1 4 1 8 A 2 2 1 8 2 0 1 9 2 1 M 1 6 A 2 /M 1 6 A 3 /M 1 6 A 4 R I F L E 1 v s fig 1 5 a Figure 15. Lower Receiver and Buttstock Assembly (M16A2) 9349100, (M16A3) 12012001, (M16A4) 12598101, (M4) 9390011, and (M4A1) 12972690 (Sheet 1 of 2).
PAGE 362
TM 9-1005-319-23&P 0039 3 A 1 A 2 A 3 B 8 3 0 D 4 9 7 5 3 0 C 6 1 0 1 1 A 1 2 A 2 5 2 4 1 7 1 3 1 6 1 6 A 2 3 2 8 A 1 5 1 4 1 8 C 2 2 1 9 1 8 B 2 0 2 1 M 4 /M 4 A 1 C A R B I N E Figure 15. Lower Receiver and Buttstock Assembly (M16A2) 9349100, (M16A3) 12012001, (M16A4) 12598101, (M4) 9390011, and (M4A1) 12972690 (Sheet 2 of 2).
PAGE 363
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 05 FIG.
PAGE 364
TM 9-1005-319-23&P (1) ITEM NO. 11 (2) SMR CODE PAFZZ 11A PAFZZ 12 PAFZZ 12A PAFZZ 13 PAFZZ (3) (4) NSN CAGEC 5360-00-992-6655 19204 5360-00-992-6655 19204 5315-00-992-6654 19204 5315-00-992-6654 19204 5360-00-992-7301 19204 (5) PART NUMBER 8448586 8448586 8448585 8448585 8448637 (6) DESCRIPTION AND USABLE ON CODE (UOC) SPRING, HELICAL, COMPRESSION, TAKE DOWN/PIVOT PIN (M16A2, M16A3, M16A4) .....................................
PAGE 365
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER 0039 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY 19 PAFZZ 1005-01-148-4805 19200 9349127 GRIP, RIFLE, PLASTIC, BLACK ........ 1 20 PAFZZ 5310-00-527-3634 80205 MS35335-61 WASHER, LOCK, RIFLE GRIP ........... 1 21 PAFZZ 5305-01-268-1191 88044 SCREW, MACHINE, RIFLE GRIP ...... 1 22 PAFZZ 5360-00-992-7292 19204 AN501D416 -18 8448516 SPRING, HELICAL, COMPRESSION, SAFETY............................
PAGE 366
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE 30C XAFFA 30D XAFFA (3) (4) NSN CAGEC 19200 19200 (5) PART NUMBER 9390011 12972690 (6) DESCRIPTION AND USABLE ON CODE (UOC) LOWER RECEIVER AND RECEIVER EXTENSION ASSEMBLY (M4) (FOR ASSEMBLY BREAKDOWN SEE FIG. 20) .......................................... UOC:AS1 LOWER RECEIVER AND RECEIVER EXTENSION ASSEMBLY (M4A1) (FOR ASSEMBLY BREAKDOWN SEE FIG. 20) ..........................................
PAGE 367
PAGE 368
TM 9-1005-319-23&P 1 0039 2 4 3 7 6 5 M 1 6 A 2 /M 1 6 A 3 /M 1 6 A 4 R I F L E 8 9 4 A 1 3 1 0 5 1 1 1 2 M 4 /M 4 A 1 C A R B I N E 1 v s fig 1 6 Figure 16. Buttstock Assembly (M16A2, M16A3, M16A4) 9349119 and (M4, M4A1) 12012082.
PAGE 369
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 0501 FIG. 16 BUTTSTOCK ASSEMBLY (M16A2, M16A3, M16A4) 9349119 AND (M4, M4A1) 12012082 1 2 3 4 PAFZZ PAFZZ PAFZZ XAFZZ 1005-01-520-7064 19200 1005-01-146-7685 19200 5340-00-463-3892 19200 19200 12999220 9349130 8448653 9349121 DOOR ASSEMBLY, THUMB (M16A2, M16A3, M16A4)......................
PAGE 370
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY 12 PAFZZ 5315-00-843-9487 80205 MS16562-202 PIN, SPRING (M4, M4A1) .................... UOC:AS1, AY6 1 13 PAFZZ 5305-01-459-5982 19200 12012083 1 MACHINE SCREW (M4, M4A1) ..........
PAGE 371
PAGE 372
TM 9-1005-319-23&P 0039 4 A 2 3 1 3 A 4 1 A M 1 6 A 3 /M 4 A 1 M 1 6 A 2 /M 1 6 A 4 /M 4 Figure 17. Hammer Assembly (M16A2, M16A4) 9349106, (M4) 9390032, and (M16A3, M4A1) 8448610.
PAGE 373
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 0502 FIG.
PAGE 374
TM 9-1005-319-23&P 0039 1 A 1 2 2 M 1 6 A 2 /M 1 6 A 4 M 4 3 3 A 2 4 M 1 6 A 3 /M 4 A 1 Figure 18. Trigger Assembly (M16A2, M16A4) 9349115, (M16A3) 8448591, (M4) 12972697, and (M4A1) 12972698.
PAGE 375
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 0503 FIG.
PAGE 376
TM 9-1005-319-23&P 0039 1 B 1 A 1 2 2 M 4 M 1 6 A 2 /M 1 6 A 4 1 v s fig 1 9 Figure 19. Trigger Subassembly (M16A2, M16A4) 9392518 and (M4) 12972696.
PAGE 377
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 050301 FIG. 19 TRIGGER SUBASSEMBLY (M16A2, M16A4) 9392518 AND (M4) 12972696 1 1A 1B 2 PAFZZ PAFZZ PAFZZ XAFZZ 5360-01-135-0353 19200 5360-01-135-0353 19200 5360-01-396-0256 19200 19200 9349116 9349116 12972695 9390736 SPRING, HELICAL, COMP, DISCONNECT (M16A2, M16A4) ......... UOC:AR8, AZ1 SPRING, HELICAL, COMP, DISCONNECT (NICKEL/SHINY) (M4)...
PAGE 378
TM 9-1005-319-23&P 0039 1 2 3 6 6 A 6 B M 1 6 A 2 /M 1 6 A 3 /M 1 6 A 4 R I F L E 5 4 1 A 7 8 2 3 6 C 6 D 1 1 1 0 9 5 M 4 /M 4 A 1 C A R B I N E 4 1 v s fig 2 0 Figure 20. Lower Receiver and Receiver Extension Assembly (M16A2) 9349101, (M16A3) 12012002, (M16A4) 12598102, (M4) 9390011, and (M4A1) 12972690.
PAGE 379
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 0504 FIG.
PAGE 380
TM 9-1005-319-23&P (1) ITEM NO. 10 11 (2) SMR CODE PAFZZ PAFZZ (3) (4) NSN CAGEC 5315-00-992-6654 19204 5360-00-992-6655 19204 (5) PART NUMBER 8448585 8448586 (6) DESCRIPTION AND USABLE ON CODE (UOC) (7) QTY PIN, STRAIGHT, HEADLESS (M4, M4A1)............................................. UOC:AS1, AY6 1 SPRING, HELICAL, COMPRESSION (M4, M4A1).............................................
PAGE 381
PAGE 382
TM 9-1005-319-23&P 0039 1 2 3 4 5 6 1 v s fig 2 1 Figure 21. M16A3, M16A4, M4, and M4A1 Adapter Rail Cover Assemblies.
PAGE 383
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 06 FIG.
PAGE 384
TM 9-1005-319-23&P 0039 1 3 4 5 2 6 1 0 9 7 8 1 v s fig 2 2 Figure 22. Carrying Handle Assembly (M16A3, M16A4, M4, M4A1) 12951011.
PAGE 385
TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 07 FIG. 22 CARRYING HANDLE ASSEMBLY (M16A3, M16A4, M4, M4A1) 12951011 1 PAFFF 1005-01-465-0401 19200 12951011 CARRYING HANDLE ASSEMBLY ..... UOC:AW4, AZ1, AS1, AY6 2 PAFZZ 12951021 .HANDLE, GUN CARRYING (M16A3, M16A4, M4, M4A1) ...............
PAGE 386
TM 9-1005-319-23&P 0039 2 4 3 1 3 5 6 1 2 1 7 1 1 8 1 0 9 Figure 23. Special Tools.
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TM 9-1005-319-23&P (1) ITEM NO. (2) SMR CODE (3) (4) NSN CAGEC (5) PART NUMBER (6) DESCRIPTION AND USABLE ON CODE (UOC) 0039 (7) QTY GROUP 9500 FIG. 23 SPECIAL TOOLS 1 PEFZZ 19204 8426685 MAINTENANCE KIT, GUN DS/GS SUPPORT MAINTENANCE FOR 5.56 RIFLE, M16 RIFLE SERIES ................ 2 2 PAFZZ 4933-01-035-5607 19204 12006359 .CASE, BORE GAGE............................. 2 3 PAFZZ 4933-00-800-7508 19204 8448201 .REFLECTOR TOOL, CHAMBER .......
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TM 9-1005-319-23&P 0040 FIELD MAINTENANCE NATIONAL STOCK NUMBER INDEX STOCK NUMBER 5315-00-017-9537 3040-00-017-9539 1005-00-017-9540 5360-00-017-9541 1005-00-017-9543 1005-00-017-9546 1005-00-017-9547 1005-00-017-9548 1005-00-017-9551 1005-00-056-2201 5360-00-056-2246 1005-00-056-2247 5315-00-058-6044 5315-00-058-6081 5315-00-058-6678 5320-01-063-7635 5220-00-070-7814 5220-00-070-7815 4933-00-070-9151 1005-00-087-8998 3110-00-183-9175 5220-00-221-9391 1005-00-403-0964 5340-00-463-3892 5315-00-463-3894
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TM 9-1005-319-23&P 0040 NATIONAL STOCK NUMBER INDEX - Continued STOCK NUMBER 5220-01-043-9473 5315-01-048-9372 5320-01-063-7635 5220-01-075-5004 1005-01-134-3621 5305-01-134-3622 1005-01-134-3625 5355-01-134-3627 1005-01-134-3629 1005-01-134-3630 1005-01-134-3631 1005-01-134-3633 1005-01-134-3701 5360-01-134-3710 5360-01-135-0353 1005-01-135-3697 5355-01-135-4972 1005-01-135-4973 5360-01-136-5471 5305-01-144-1490 5360-01-144-1492 5305-01-144-1494 5340-01-144-1499 5340-01-145-7910 1005-01-146-7684 1005-01
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TM 9-1005-319-23&P STOCK NUMBER 5305-01-484-7075 5360-01-484-7076 5340-01-484-7999 1005-01-484-8000 5325-01-486-7585 1005-01-497-2592 1005-01-505-1035 5120-01-505-1677 1005-01-505-2886 1005-01-520-7064 1005-01-522-0772 5305-01-540-4805 5360-01-540-4806 5365-01-540-4807 5360-01-540-4808 FIG.
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TM 9-1005-319-23&P 0041 FIELD MAINTENANCE PART NUMBER INDEX PART NUMBER AN501D416-18 MS16562-98 MS16562-103 MS16562-106 MS16562-119 MS16562-121 MS16562-129 MS16562-202 MS16562-223 MS16624-3035 MS16626-3137 MS16632-3012 MS19060-4808 MS35335-61 MS39086-93 7799734 7799735 8426685 8448201 8448202 8448496 8448502 8448503 8448504 8448505 8448506 8448507 8448508 8448510 8448511 8448512 8448513 8448515 8448516 8448517 8448518 8448519 8448520 FIG.
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TM 9-1005-319-23&P 0041 PART NUMBER INDEX - Continued PART NUMBER 8448638 8448652 8448653 8448655 8448670 8448697 8448712 9349050 9349051 9349054 9349056 9349059 9349062 9349063 9349065 9349066 9349067 9349069 9349070 9349072 9349074 9349075 9349076 9349077 9349085 9349086 9349100 9349101 9349102 9349106 9349107 9349108 9349109 9349110 9349113 9349114 9349115 9349116 9349119 9349120 9349121 9349124 FIG.
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TM 9-1005-319-23&P PART NUMBER 12951026 12951028 12972652 12972670 12972675 12972680 12972690 12972695 12972696 12972697 12972698 12973010 12973011 12973012 12973021 12973022 12973027 12973029 12973034 12973035 12973096 12973097 12973099 12973101 12973132 12973134 12973135 12973136 12973137 12973138 12973139 12991254 12991533 12991850 12991851 FIG.
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TM 9-1005-319-23&P CHAPTER 6 SUPPORTING INFORMATION FOR M16 SERIES RIFLES AND M4 SERIES CARBINES
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TM 9-1005-319-23&P FIELD MAINTENANCE REFERENCES SCOPE This work package lists all field manuals, forms, miscellaneous publications, technical bulletins, and technical manuals referenced in this manual. FIELD MANUALS FM 3-22.9 Rifle Marksmanship M16A1, M16A2/3, M16A4, and M4 Carbine FM 4-25.
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TM 9-1005-319-23&P 0042 MISCELLANEOUS PUBLICATIONS - Continued AMC-P 310-9 Equipment Publications Listing AR 75-1 Malfunctions Involving Ammunition and Explosives AR 385-40 Accident Reporting and Records AR 725-50 Requisition, Receipt, and Issue System AR 750-1 Army Materiel Maintenance Policy CTA 8-100 Army Medical Department Expendable/Durable Items CTA 50-909 Field and Garrison Furnishings and Equipment CTA 50-970 Expendable/Durable Items (Except: Medical, Class V, Repair Parts, and Hera
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TM 9-1005-319-23&P 0042 TECHNICAL MANUALS/INSTRUCTIONS/ORDERS TM 9-1005-237-23&P Organizational and Direct Support Maintenance Manual (Including Repair Parts and Special Tools List) for Bayonet-Knife, M6, with Bayonet-Knife Scabbard, M10 (NSN 1095-00-014-0369), BayonetKnife, M7, with Bayonet-Knife Scabbard, M10 (1095-00-017-9701), and M9 Multipurpose Bayonet System (1005-01-227-1739) TM 9-1005-319-10 Operator's Manual for Rifle, 5.56 mm, M16A2 W/E (NSN 1005-01128-9936) (EIC: 4GM); Rifle, 5.
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TM 9-1005-319-23&P 0042 TECHNICAL MANUALS/INSTRUCTIONS/ORDERS - Continued TM 750-244-7 Procedures for Destruction of Equipment in Federal Supply Classifications 1000, 1005, 1010, 1015, 1020, 1025, 1030, 1055, 1090 and 1095 To Prevent Enemy Use TO 00-5-1 AF Technical Order System TO 00-35D-54 Materiel Deficiency Reporting and Investigating System TO 11A-13-10-7 Storage and Maintenance Procedures for Small Arms Ammunition TO 11W-1-10 Historical Data Recording of Inspection, Maintenance, and Firing
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TM 9-1005-319-23&P 0043 FIELD MAINTENANCE MAINTENANCE ALLOCATION CHART (MAC) INTRODUCTION INTRODUCTION The Army Maintenance System MAC This introduction provides a general explanation of all maintenance and repair functions authorized at the two maintenance levels under the Two-Level Maintenance System concept. This MAC (immediately following the introduction) designates overall authority and responsibility for the performance of maintenance functions on the identified end item or component.
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TM 9-1005-319-23&P 0043 Maintenance Functions - Continued c. Clean. To rid the item of contamination. d. Touch up. To spot paint scratched or blistered surfaces. e. Mark. To restore obliterated identification. 4. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper position, or by setting the operating characteristics to specified parameters. 5. Align. To adjust specified variable elements of an item to bring about optimum or desired performance. 6. Calibrate.
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TM 9-1005-319-23&P 0043 10. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely serviceable/operational condition as required by maintenance standards in appropriate technical publications. Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an item to like new condition. 11. Rebuild.
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TM 9-1005-319-23&P 0043 Explanation of Columns in the MAC - Continued Column (5) Tools and Equipment Reference Code. Column (5) specifies, by code, those common tool sets (not individual tools), common Test, Measurement and Diagnostic Equipment (TMDE), and special tools, special TMDE and special support equipment required to perform the designated function. Codes are keyed to the entries in the tools and test equipment table. Column (6) Remarks Code.
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TM 9-1005-319-23&P 0044 FIELD MAINTENANCE MAINTENANCE ALLOCATION CHART (MAC) MAINTENANCE ALLOCATION CHART (MAC) Table 1. MAC for M16 Series Rifles and M4 Series Carbines. (1) (2) (3) (4) MAINTENANCE LEVEL (5) FIELD GROUP NUMBER 00 01 02 0201 0202 03 COMPONENT/ ASSEMBLY M16A2, M16A3, M16A4 5.56mm Rifle, and M4/M4A1 Carbine SUSTAINMENT TOOLS BELOW AND MAINTENANCE CREW SERVICE FIELD DEPOT DEPOT EQUIPMENT REMARKS FUNCTION C O F H D REF CODE CODE Inspect Test Service Replace Overhaul 0.
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TM 9-1005-319-23&P 0044 MAINTENANCE ALLOCATION CHART (MAC) - Continued Table 1. MAC for M16 Series Rifles and M4 Series Carbines - Continued. (1) (2) (3) (4) MAINTENANCE LEVEL (5) (6) FIELD GROUP NUMBER 04 0401 0402 0403 0404 0405 040501 040502 05 COMPONENT/ ASSEMBLY Upper Receiver and Barrel Assembly SUSTAINMENT TOOLS BELOW AND MAINTENANCE CREW SERVICE FIELD DEPOT DEPOT EQUIPMENT REMARKS FUNCTION C O F H D REF CODE CODE Inspect Test Service Remove/Install Replace Repair 0.
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TM 9-1005-319-23&P 0044 Table 1. MAC for M16 Series Rifles and M4 Series Carbines - Continued. (1) (2) (3) (4) MAINTENANCE LEVEL (5) FIELD GROUP NUMBER 0501 COMPONENT/ ASSEMBLY SUSTAINMENT TOOLS BELOW AND MAINTENANCE CREW SERVICE FIELD DEPOT DEPOT EQUIPMENT REMARKS FUNCTION C O F H D REF CODE CODE Buttstock Assembly Inspect Remove/Install Replace Repair 0.1 0.1 0.1 0.1 0502 Hammer Assembly Inspect Remove/Install Replace Repair 0.1 0.1 0.1 0.
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TM 9-1005-319-23&P 0044 MAINTENANCE ALLOCATION CHART (MAC) - Continued Table 2. Tools and Test Equipment for M16 Series Rifles and M4 Series Carbines. (1) TOOL OR TEST EQUIPMENT REFERENCE CODE (2) MAINTENANCE LEVEL (3) (4) (5) NOMENCLATURE NATIONAL STOCK NUMBER (NSN) TOOL NUMBER 1 (Army Only) F Shop Set, Small Arms: Field 4933-00-754-0664 Maintenance, Basic, Less Power SC 4933-95-A11 2 (Army Only) F Tool and Gage Set, DS/GS Maintenance for 5.
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TM 9-1005-319-23&P 0045 FIELD MAINTENANCE EXPENDABLE AND DURABLE ITEMS LIST INTRODUCTION Scope This work package lists expendable and durable items that you will need to operate and maintain the M16A2/M16A3/M16A4 Rifle and the M4/M4A1 Carbine. This list is for information only and is not authority to requisition the listed items.
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TM 9-1005-319-23&P 0045 EXPENDABLE AND DURABLE ITEMS LIST - Continued Table 1. Expendable and Durable Items List - Continued. (1) (2) Item No.
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TM 9-1005-319-23&P 0045 Table 1. Expendable and Durable Items List - Continued. (1) (2) Item No. Level 14 F (3) National Stock Number (NSN) 6810-00-244-0290 6810-00-616-9188 (4) (5) Item Name, Description, Part Number/(CAGEC) U/I DICHLOROMETHANE, TECHNICAL 5 gal. (18.93 l) pail 600 lb (272.16 kg) drum ASTM D 4701 (81346) CN DR 15 O 6850-00-281-1985 DRY CLEANING SOLVENT 1 gal. (3.79 l) can A-A-711 (58536) GL 16 O 8010-00-297-0560 ENAMEL: olive drab no. 3407, 1 gal. (3.
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TM 9-1005-319-23&P 0045 EXPENDABLE AND DURABLE ITEMS LIST - Continued Table 1. Expendable and Durable Items List - Continued. (1) (2) Item No.
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TM 9-1005-319-23&P 0045 Table 1. Expendable and Durable Items List - Continued. (1) (2) Item No.
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TM 9-1005-319-23&P INDEX WP Sequence No. - Page No. Subject A Abbreviation/Acronym ........................................................................................... Adapter Rail Cover Assemblies Maintenance Installation ......................................................................................................... Removal .............................................................................................................. Repair or Replacement ..................................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject C Carrying Handle Assembly Maintenance Assembly ............................................................................................................ Disassembly ....................................................................................................... Lubrication ......................................................................................................... Repair or Replacement ..........................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject G (Cont) General - Pre-Embarkation Inspection of Material in Units Alerted for Overseas Movement ........................................................................................... General - Preventive Maintenance Checks and Services (PMCS) Introduction General - Service Upon Receipt ............................................................................. General - Theory of Operation ......................................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject L (Cont) Lower Receiver and Receiver Extension Assembly (M16A2) 9349101, (M16A3) 12012002, (M16A4) 12598102, (M4) 9390011, and (M4A1) 12972690 Maintenance Assembly ............................................................................................................ Disassembly ....................................................................................................... Repair or Replacement ............................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject R References ............................................................................................................... Repair Parts ............................................................................................................ Repair Parts List Adapter Rail Cover Assemblies ........................................................................ Back-up Iron Sight Assembly ..........................................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject S Scope - General Information .................................................................................. Scope - Introduction to Repair Parts and Special Tools List ............................... Scope - Pre-Embarkation Inspection of Material in Units Alerted for Overseas Movement ........................................................................................... Scope - References ....................................
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TM 9-1005-319-23&P INDEX - Continued WP Sequence No. - Page No. Subject U (Cont) Upper Receiver and Barrel Assembly (M16A2) 9349050, (M16A3, M16A4) 12973010, and (M4, M4A1) 12972680 Maintenance Assembly ............................................................................................................ Cleaning ............................................................................................................. Disassembly ....................................................................
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Use Part II (reverse) for Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM). RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE Date you filled out this form For use of this form, see AR 25-30; the proponent agency is ODISC4.
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TO: (Forward direct to addressee listed in publication) FROM: (Activity and location) (Include ZIP Code) AMSTA-LC-LMPP / TECH PUBS, TACOM-RI 1 Rock Island Arsenal Rock Island, IL 61299-7630 Your address DATE Date you filled out this form PART II – REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS PUBLICATION NUMBER DATE TITLE TM 9-1005-319-23&P 28 November 2008 Field Maint. Manual for M16 Series Rifle and M4 Series Carbine PAGE NO. COLM NO. LINE NO.
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Use Part II (reverse) for Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM). RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE For use of this form, see AR 25-30; the proponent agency is ODISC4.
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TO: (Forward direct to addressee listed in publication) FROM: (Activity and location) (Include ZIP Code) DATE AMSTA-LC-LMPP / TECH PUBS, TACOM-RI 1 Rock Island Arsenal Rock Island, IL 61299-7630 PART II – REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS PUBLICATION NUMBER DATE TITLE TM 9-1005-319-23&P 28 November 2008 Field Maint. Manual for M16 Series Rifle and M4 Series Carbine PAGE NO. COLM NO. LINE NO.
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Use Part II (reverse) for Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM). RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE For use of this form, see AR 25-30; the proponent agency is ODISC4.
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TO: (Forward direct to addressee listed in publication) FROM: (Activity and location) (Include ZIP Code) DATE AMSTA-LC-LMPP / TECH PUBS, TACOM-RI 1 Rock Island Arsenal Rock Island, IL 61299-7630 PART II – REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS PUBLICATION NUMBER DATE TITLE TM 9-1005-319-23&P 28 November 2008 Field Maint. Manual for M16 Series Rifle and M4 Series Carbine PAGE NO. COLM NO. LINE NO.
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Use Part II (reverse) for Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM). RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE For use of this form, see AR 25-30; the proponent agency is ODISC4.
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TO: (Forward direct to addressee listed in publication) FROM: (Activity and location) (Include ZIP Code) DATE AMSTA-LC-LMPP / TECH PUBS, TACOM-RI 1 Rock Island Arsenal Rock Island, IL 61299-7630 PART II – REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS PUBLICATION NUMBER DATE TITLE TM 9-1005-319-23&P 28 November 2008 Field Maint. Manual for M16 Series Rifle and M4 Series Carbine PAGE NO. COLM NO. LINE NO.
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By Order of the Secretary of the Army: GEORGE W. CASEY, JR. General, United States Army Chief of Staff Official: JOYCE E. MORROW Administrative Assistant to the Secretary of the Army 0831107 DISTRIBUTION: To be distributed in accordance with the Initial Distribution Number (IDN) 400020 requirements for TM 9-1005-319-23&P.
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THE METRIC SYSTEM AND EQUIVALENTS LINEAR MEASURE SQUARE MEASURE 1 Centimeter = 10 Millimeters = 0.01 Meter = 0.3937 Inch 1 Decimeter = 10 Centimeters = 3.94 Inches 1 Meter =10 Decimeters = 100 Centimeters = 1000 Millimeters = 39.37 Inches 1 Dekameter = 10 Meters = 32.8 Feet 1 Hectometer =10 Dekameters = 328.08 Feet 1 Kilometer =10 Hectometers = 1000 Meters = 0.621 Mile = 3,280.8 Feet Millimeters = Inches times 25.4 Inches = Millimeters divided by 25.4 1 Sq Centimeter = 100 Sq Millimeters = 0.
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PIN: 060514-000