Key And Bolt Carrier Assembly Cont

location item action remarks c. Bolt carrier assembly Inspect for b;rrs, cracks, and wear.

Key and Bolt Carrier Assembly a. Bolt carrier key and bolt carrier b. Carrier and key screw

Install and position bolt carrier key onto bolt carrier.

Install the two carrier and key screws.

Torque and stake.

Always use new screws.

See page 3-20 and below.

surface a i

original staking

NOTE:

SURFACE "A" MUST NOT INDICATE DISTORTION OR DAMAGE WHICH IMPAIRS PARALLELISM.

surface a

NOTE:

SURFACE "A" MUST NOT INDICATE ANY LOSS OF PARALLELISM. A MAXIMUM OF 0.025 INCH PROTRUSION IN AN UPWARD DIRECTION IS PERMISSIBLE.

surface a

FIELD REPLACEMENT STAKING

0.025 MAX 4 PLACES

REVISED STAKING

NOTE

Jf the bolt carrier key is replaced, it may be necessary to create a seal between the bolt carrier and key by firing three through eight rounds. Manual operation of the rifle may be required.

3-22

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