Specifications

TM 05539-IN

BARRELED RECEIVER - CONTINUED 0022 00

0022 00-3/(0022 00-4 Blank)

INSPECTION - CONTINUED

3. Inspect barrel and receiver for burrs. Check chamber area for nicks or burrs that would cause hard extraction or cham-

bering. Burrs in chamber area may also cause a ruptured case or a failure to extract. If there are visible cracks in the bar-

rel and receiver, chamber, or muzzle break, request WIR disposition from Material Manager, Albany, GA.

NOTE

• Front and rear trigger guard screws are identical when new.

• The screws must be modified. See step 6 in this work package.

4. Inspect the trigger guard screws (3 and 4) for wear, unserviceable threads, and correct length. When replacing front trig-

ger guard screw (4) and rear trigger guard screw (3), they must be modified to length.

NOTE

• To ensure proper tension on screws, allow only one thread depth under flush of the inside bottom of the

receiver.

• Bolt should not hit screws after screws are torqued.

5. Using a grinding wheel on both trigger guard screws (3 and 4), remove metal until the overall length is approximately

1-1/4 inches for the front trigger guard screw (4) and 1-5/8 inches for the rear trigger guard screw (3). If needed, adjust

screw length until the screws thread-in flush or recess a maximum of one thread below the inside bottom of the receiver.

6. With a stone, bevel trigger guard screws to remove all sharp edges.

END OF WORK PACKAGE

M40-025