MRAD (Multi-Role Adaptive Design) Operator’s Manual PO Box 1077 Murfreesboro, TN 37133 USA / 615.8962938 / 615.896.7313 FAX / mail@barrett.
Use of this manual Before you handle the MRAD rifle, read this manual in its entirety. It is important that you understand the principles of safe gun handling in general and the unique features of this rifle. This manual is not a substitute for training from a qualified instructor. Important safety topics are discussed in this chapter and throughout this manual. This manual should remain with the rifle and it should be transferred with the rifle to subsequent owners.
Eye protection Eye protection should be worn when shooting and maintaining your rifle. It is normal for firing to generate airborne dust and debris. Protect your eyes from solvents and uncaptured parts under spring pressure while performing maintenance on your rifle. Assume every gun is loaded Always treat every gun as if it were loaded. Look and feel for an empty chamber. Do not trust your memory and do not take anyone else’s word for it. Do not trust the extractor to provide an empty chamber.
minutes. If a hangfire (slow ignition) has occurred, the round will probably fire within two minutes. If the round does not fire, remove and inspect the cartridge. If the primer is indented properly, discard the cartridge in a safe manner. If the primer is lightly dented, refer to the troubleshooting chart in this manual.
spring is under heavy load. Serious injury can occur if the assembly pin is removed. (Page 25) • Adjusting the trigger weight too low may cause an accidental discharge. (Page 31) • Physically check the chamber and make sure the rifle is not loaded. (Page 35) • Unload and clear the rifle before cleaning. (Page 36) CAUTIONS Summary • The bolt handle must be in the up position before the receivers can be unlatched. (Page 14) • Do not force the bolt into place.
If you need factory service, whether made under warranty or not, please contact BFMI for instructions on how to have your gun repaired. Phone: Fax: Email: Web Site: Address: 615.8962938 615.896.2938 mail@barrett.net barrett.net P.O. Box 1077 Murfreesboro, TN USA 37133-1077 Your Responsibility Your Barrett rifle is well-engineered and manufactured to the highest standards. It was proof-fired and carefully inspected before it was packaged and shipped from our factory. Its safe use depends on you alone.
TABLE OF CONTENTS Use of this Manual----------------------------------------------------------1 Safety Guidelines ----------------------------------------------------------1-3 Summary of Warnings and Cautions --------------------------------------3-4 Warranty and Service -------------------------------------------------------4-5 Table of Contents -----------------------------------------------------------6 Specifications ---------------------------------------------------------------7 Contents -------------
SPECIFICATIONS MODEL: MRAD (Multi-RoleAdaptive Design) CALIBER: .338 Lapua Magnum BARREL LENGTH: 24.5” (62.23 cm) OVERALL LENGTH: Folding stock extended: 46.90” (119.13 cm) Folding stock closed: 39.90” (101.35 cm) WEIGHT: 14.8 pounds (6.71 kg) TWIST RATE: 1-10” Right-Hand Twist SAFETY: Manually-operated reversible thumb-lever SAFETY RANGE NEEDED: 4 miles (estimated) SCOPE RAIL: Integral M1913 style, 21.75” (55.
CONTENTS Your MRAD rifle includes the following: • MRAD Rifle • Two Magazines • Hard Carrying Case with Foam Insert • Operator’s Manual • Bolt-Carrier Disassembly Tool • Two Short and One Long Accessory Rails The rifle is shipped from the factory fully assembled. (Figure 2.) Figure 2. (Shown with optional accessories.
PURPOSE AND CAPABILITIES OF FIREARM The MRAD is a long-range configurable sniper-rifle system designed to accurately and precisely engage targets at 1500 meters or beyond. The MRAD has been designed for complete system modularity, reduced logistical and operational burden, and maximum operator-level sustainability. The MRAD is capable of reconfiguration in less than two minutes with no need for rezeroing, live fire, and without the use of tools by swapping modular upper receivers.
LOADING 1. With the rifle pointed in a safe direction, lift the bolt handle (Figure 3, Step A.) and draw it to the rear of the rifle. (Figure 3, Step B.) 2. Rotate the safety lever to the “SAFE” (lever horizontal) position. (Figure 4.) A Figure 3, Step A. B Figure 3, Step B.
SAFETY Figure 4. (Safety lever to “SAFE”.) 3. Insert a loaded magazine into the rifle. (Figure 5.) The magazine inserts straight into the magazine well from the bottom. Figure 5. (Inserting the magazine.) 4. Push the bolt handle forward (Figure 6, Step A.) quickly and firmly to load a cartridge into the chamber. Rotate the bolt handle down (Figure 6, Step B), to close the firing chamber.
WARNING Do not attempt to force a cartridge into the chamber by forcing the bolt closed. If the bolt will not close with moderate, but firm pressure, remove the cartridge and examine it for damage or defects. Check the chamber for obstructions. B A Figure 6, Step A and B. (Closing the Bolt) 5. Rotate the safety to the “FIRE” position (45 degrees). The rifle is now ready to fire.
UNLOADING AND CLEARING 1. Place the safety lever in the “SAFE” position. 2. Lift the bolt handle upward and pull it to the rear to eject a chambered cartridge or spent case. 3. Remove the magazine from the rifle by pushing the magazine catch forward and removing the magazine from the rifle. (Figure 7, Step A and B.) B A Figure 7, Step A and B. 4. With the bolt pulled fully to the rear, look into the chamber to make sure that the cartridge or spent case has been removed and the chamber is now empty.
DISASSEMBLY AND ASSEMBLY WARNING Unload and clear the rifle before disassembly. Ensure no live ammunition is present during disassembly or assembly. CAUTION The bolt handle must be in the up position before the receivers can be unlatched and separated. Field Stripping The rifle may be field stripped into 5 major components. (Figure 8.
Disassembly into Major Components 1. Deploy bipod legs (if attached) to let the rifle rest on the bipod feet and pistol grip of the rifle. 2. Ensure the safety lever is in the safe position and raise the bolt handle fully. (Figure 9.) BOLT HANDLE Up position Figure 9. 3. Before separating the receivers, ensure bolt is clear of chamber. Depress and hold the receiver latch, located on the underside of the lower receiver just behind the pistol grip. (Figure 10, Step A.
RECEIVER LATCH H Up position Figure 10, Step A. Figure 10, Step B. 4. Separate the receiver and the lower receiver. (Figure 10, Step B.) 5. Slide the assembly pin to the left to separate the receivers. The pin cannot be completely removed, DO NOT force it out. (Figure 11.
B A Figure 11. NOTE No further disassembly of the receivers are recommended or necessary for maintenance. Reassembly of Major Components Major components are assembled in reverse order of disassembly. Folding the Stock The MRAD has a folding stock for ease of transport. To fold the stock, press the folding-stock button and swing the buttstock to the ejection port side, locking it firmly into place on the bolt handle. (Figure 12 Step A and B.) A B Figure 12, Steps A and B.
Length-of-Pull Adjustment 1. To adjust the length of pull, depress the adjustment button to release the cross lock pin and slide the recoil pad to desired location. (Figure 13, Step A and B.) 2. After determining the correct length, release the adjustment button and allow the recoil pad to lock into place. 3. The notches on the sliding adjustment pin are in increments of .375”. A B Figure 13, Steps A and B. Cheek Piece Adjustment 1. Loosen the cheek piece lock knob by turning it counterclockwise. 2.
3. After removing the floor plate, slowly release the magazine spring to remove the floor plate retainer, the spring, and the follower. (Figure 14, Step B.) A B NOTE SPRING ORIENTATION Figure 14, Step A and B. Cleaning of the Magazine Assembly Remove any debris by tapping the magazine or cleaning it out with cleaning brush. Wipe the entire magazine down with a cloth and ensure it is free of debris and dry. No oil or lubrication is needed in the magazine.
Removal of the Barrel Lift bolt handle to unlock bolt from barrel extension FIRST before removing barrel cross bolts. Remove the two cross bolts that pass through the barrel extension using a T-30 Torx Wrench and slide the barrel out of the receiver. (Figure 16, Step A and B.) A Figure 16, Step A. B Figure 16, Step B. NOTE No further disassembly of the barrel assembly is recommended or necessary for maintenance. Installing Barrel Barrel is installed in reverse order of removal.
Headspace Inspection 1. Ensure the rifle is unloaded and that the chamber is clear of obstructions. Ensure that the gages are clean before inserting. Brown Green Figure 17. 2. Pull bolt handle backward into the open position (Figure 18 Step A.) and insert the Go Gage (Figure 17.) into the chamber.(Figure 18, step B.) A B Figure 18, Steps A and B.
3. GENTLY slide the bolt forward and down until it stops. (Figure 19.) Figure 19. 4. Turn the rifle over and inspect the location of the bolt handle. The bottom of the bolt handle should be making contact with the receiver. (Figure 20.) Figure 20. 5. Return the rifle to the upright position and slide the bolt backward to the open position. Remove the Go Gage. 6. Insert the Field Gage (Figure 17.) and GENTLY slide the bolt forward and down until it stops.
CAUTION DO NOT FORCE THE BOLT INTO PLACE. 7. Turn the rifle over and inspect the location of the bolt handle. The bolt handle should NOT be making contact with the receiver. If the bolt closes completely on the Field Gage, ensure the barrel is properly installed. If the bolt still closes on the Field Gage, return for repair. (Figure 21.) Figure 21. Caliber Conversion Use the disassembly method mentioned in the section titled Disassembly into Major Components to convert your rifle to a different caliber.
Disassembly of the bolt carrier assembly NOTE The firing-pin assembly must be cocked to enable disassembly of the bolt carrier assembly. The firing-pin assembly is cocked when the cocking piece is outside of the cam slot. (Figure 22.) 1. Lift the bolt handle to the up position. Press the receiver latch and separate the receivers. (Figures 10-11.) Withdraw the bolt carrier assembly from the back of the receiver. Figure 22. (Cocked bolt carrier assembly) 2.
It is recommended to use the hard edge of the recoil pad behind the groove on top of the buttplate assembly. (Figure 23, Step A.) 3. Put pressure on the bolt carrier assembly against its spring tension in order to pull the cocking piece out enough to expose the 2 (two) disassembly slots. (Figure 23, Step B.) Only use the amount of force necessary to expose the slots in the cocking piece. Additional force could be cause damage to the cocking piece or sear slot of the cocking piece shroud. 4.
A B Figure 24. 6. Using a punch or other pointed object, push the bolt pin (Figure 25, Step A.) out of the bolt tube. Note that the bolt pin can only be disassembled or assembled from one direction. 7. Remove the bolt assembly (Figure 25, Step B.) from the bolt carrier. Figure 25. NOTE No further disassembly of the firing pin assembly is recommended or necessary for maintenance.
Reassembly of the bolt carrier assembly Assembly is in the reverse order of its removal. Ensure that the hole in the bolt pin is in line with the center hole of the bolt so that the firing pin can pass through. Disassembly and assembly of extractor NOTE If the rifle fails to extract or eject, rule out other causes before attempting to remove the extractor spring or extractor. The removal of these components are for replacement only. Extractor removal 1.
Figure 27. Figure 28. Extractor Installation The installation of the extractor is in reverse order of its removal. Insert the straight leg of the spring into the slot (Figure 29, Step A.) and wrap the circular part around the bolt. Ensure the end of the spring enters the extractor pocket. Extractor must be properly oriented where the curve of the extractor edge matched the bolt face. (Figure 28, Step B.) A B Figure 29.
ADJUSTING THE TRIGGER MECHANISM Removal of the trigger housing assembly 1. Rotate the safety lever half way between the stops on the receiver. (Figure 30.) From the opposite side of the safety lever push and slightly rotate, back and forth, the safety out of the receiver. This may require a flat punch, cartridge point, ink pen or other similar tool. SAFETY IN HALFROTATED POSITION. Figure 30. (Removal of the Safety) 2.
TRIGGER HOUSING ASSEMBLY Figure 31. (Removal of the trigger housing assembly.) Adjusting the trigger weight Note The factory setting is 2 / 2.5 pounds. Loosen the 5/16” jam nut on the trigger-weight screw. Using a 1/16” allen wrench turn the screw counter clockwise. The minimum setting on the trigger should not go below 1.5 pounds. This is achieved by approximately one half of a turn on the trigger-weight screw. Hold the allen wrench and do not allow the screw to move and tighten the 5/16” nut. (Figure 32.
Returning trigger weight to factory settings Warning Adjusting the trigger weight too low may cause an unintentional discharge. 1. Loosen the 5/16” jam nut on the trigger-weight screw. Turn the triggerweight screw counter clockwise approximately four turns using a 1/16” allen wrench. 2. Pull the trigger and depress the sear. (Figure 33, Step A and B.) Turn the trigger-weight screw clockwise until the plunger is fully compressed in the trigger-weight screw.
Adjusting the trigger over travel NOTE The trigger over travel is set to minimum from the factory 1. Loosen the ¼” brass jam nut. Insert a 5/64” allen wrench into the overtravel screw. 2. Look through the hole in the side of the trigger housing and pull the trigger and press down on the sear. 3. Turn the over-travel screw counter clockwise and observe the trigger moving away from the sear. 4.
Returning the over travel to the factory specifications 1. Loosen the ¼” brass jam nut. Insert a 5/64” allen wrench into the overtravel screw. 2. Look through the hole in the side of the trigger housing and pull the trigger and press down on the sear. 3. Turn the over-travel screw counter clockwise and observe the trigger moving away from the sear. 4. Turn the screw clockwise until it locks up the trigger against the sear.
Installation of the trigger housing assembly into the receiver 1. Insert the trigger housing assembly into the slot in the lower receiver. (Figure 36, Step A.) Slide the trigger housing assembly forward and align the front of the trigger housing onto the pin in the receiver. (Figure 36, Step B.) Next align the safety hole in the lower receiver and the hole in the trigger housing. Figure 36. (Installation of the trigger housing.) 2. Insert the safety into the receiver until it stops on the safety detent.
Figure 37. (Installation of the safety.) 3. Ensure the bolt handle is in the up position. Close the receivers together. Functional test of trigger NOTE Ensure there is no live ammunition present during this test. WARNING Visually and physically check the chamber and make sure the rifle is not loaded. With the rifle fully assembled, slowly cycle the action of the rifle and pull the trigger. Next, rapidly lift the bolt handle to the open position then back to closed.
CLEANING AND LUBRICATION WARNING Unload and clear the rifle before cleaning. CAUTION Always clean from the chamber towards the muzzle. Do not insert cleaning rods through the muzzle. The barrel crown could be damaged which would severely degrade the accuracy of the rifle. CAUTION To protect the rifle from corrosion, the rifle and the interior of the carrying case should be moisture free before the rifle is placed in the carrying case for storage. Cleaning procedure 1.
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (Before, During and After Firing) ITEM NO. INTERVAL ITEM TO BE CHECKED 1 Before MRAD 2 Before Muzzle Adapter 3 Before Barrel Assembly 4 Before Barrel 5 Before 6 Before Receiver Assembly Pin Magazine PROCEDURE NOT READY OR AVAILABLE IF: Hand cycle rifle to ensure it is functional and visually check exterior of the rifle and components for damage. Check components for cracks, breaks, and damage. Ensure all fasteners are tight.
7 Magazine 8 Before and After During 9 During 10 During Receiver Assembly Pin Magazine 11 After MRAD Muzzle Adapter magazine has free travel of the follower and that the magazine body is not damaged (bent or cracked). Ensure magazine is clean and dry. follower is not present or magazine is damaged. Check to see that the muzzle adapter is secured to the barrel and that its ports are parallel to the ground when in a level shooting position.
12 After Muzzle Adapter 13 After Clean Barrel Bore 14 After Barrel 15 After Receiver Assembly Pin 16 After Magazine found, notify unit maintenance. Check to see that the muzzle adapter is secured to the barrel and that its ports are parallel to the ground when in a level shooting position. Clean chamber and barrel bore immediately after firing. Check headspace on barrel using “Go” and Field gages. Check to see that the assembly pin is securely installed.
INSPECTION OF INSTALLED ITEMS ASSEMBLY ITEM INSPECTED PROCEDURE CONDITION Upper Receiver Assembly Upper Receiver Assembly Visual inspection Barrel Assembly Barrel Visual Inspection Bolt Carrier Assembly Muzzle Adapter Lower Receiver Assembly Extractor and Ejector Visual inspection and check for looseness. Check spring tension and visually inspect for chips or wear. Upper receiver assembly should NOT be cracked, bent or burred. Barrel should be clean and free of obstruction.
TROUBLESHOOTING MALFUNCTION Failure to chamber and lock Failure to fire Failure to extract CAUSE CORRECTIVE ACTION 1. Damaged cartridge 2. Dirty or obstructed chamber 1. Faulty ammunition 2. Cocking piece shroud not properly installed in bolt 3. Cocking piece is dragging 4. Firing pin or firing pin spring broken or damaged 5. Bolt handle not down fully 1. Broken or worn extractor 2. Broken or worn extractor spring 3. Extractor not moving freely 4. Dirty ammunition or chamber 5. Broken case rim 6.
MRAD EXPLODED VIEW 42
MRAD PARTS LIST 43
MRAD Parts List Continued 44
