Technical data

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 ............................................ WP 0015
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)......................................................0015-3
Figure 4. Removal of Barrel Stop Assembly...........................................0015-3
Figure 5. Removal of Spring Pin .............................................................0015-4
Figure 6. Removal of Gas Tube ...............................................................0015-4
Figure 7. Removal of Compensator.........................................................0015-5
Figure 8. Removal of Recessed Washer ..................................................0015-5
Figure 9. Loosening of Barrel Nut Assembly .........................................0015-6
Figure 10. Separation of Upper Receiver Assembly
and Barrel Assembly ...............................................................0015-6
Figure 11. Removal of Handguard Slip Ring ...........................................0015-7
Figure 12. Inspection of Handguard Assemblies .....................................0015-8
Figure 13. Bore Inspection ........................................................................0015-9
Figure 14. Alignment of Compensator......................................................0015-9
Figure 15. Inspection of Chamber...........................................................0015-10
Figure 16. Inspection for Corrosion ........................................................0015-10
Figure 17. Inspection for Shiny Surfaces ...............................................0015-12
Figure 18. Installation of Handguard Slip Ring ....................................0015-13
Figure 19. Alignment of Barrel Assembly and Upper
Receiver Assembly .................................................................0015-14
Figure 20. Torquing of Barrel Nut Assembly.........................................0015-15
Figure 21. Alignment of Front and Rear Sights ....................................0015-16
Figure 22. Alignment of Barrel Nut Assembly ......................................0015-17
Figure 23. Installation of Compensator..................................................0015-18
Figure 24. Alignment of Compensator....................................................0015-18
Figure 25. Installation of Gas Tube ........................................................0015-19
Figure 26. Installation of Spring Pin ......................................................0015-19
Figure 27. Installation of Barrel Stop Assembly ...................................0015-20
Figure 28. Installation of Upper Handguard Assembly
(M16A3/M16A4/M4/M4A1)....................................................0015-20
Figure 29. Installation of Lower Handguard
(M16A3/M16A4/M4/M4A1)....................................................0015-21
Figure 30. Installation of Upper Handguard Assembly (M16A2).........0015-21
Figure 31. Installation of Lower Handguard Assembly (M16A2).........0015-22
Figure 32. Use of Barrel Erosion Gage ...................................................0015-23
Figure 33. Use of Barrel Straightness Gage ..........................................0015-24
Figure 34. Insertion of Headspace Gage.................................................0015-25
Figure 35. Checking Headspace ..............................................................0015-25
Figure 36. Use of Weights in Headspace Check.....................................0015-26
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