Bev Fitchett's Guns Magazine

Bolt Carrier Assembly Cont

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LOCATION

ACTION

REMARKS

CLEANING

Bolt Carrier Assembly All items

Remove carbon using CLP (item 5, app D).

INSPECTION

Bolt Carrier Assembly a. Bolt assembly b. All items

Check for worn rings by holding the bolt carrier assembly with the bolt assembly down. Check ring spacing.

Check for serviceability.

If bolt assembly falls out of carrier after retaining pin and cam pin are removed, the rings are worn. Notify support maintenance.

REPAIR

Bolt Carrier Assembly a.

Firing pin retaining pin and cam pin

Bolt assembly

Firing pin

Replace if unserviceable.

Notify support maintenance if unserviceabie.

Items are unserviceable if cracked or mutilated.

See pages 2-21 and 2-22.

Firing pin is unserviceable if broken or if tip is miililated.

CAUTION

Extreme care must be exercised during the following procedure to assure that the striking force is not directed to the attaching screws and that the tube portion is not enlarged or flared beyond original requirements as such enlargement would permit loss of gas pressure when ti le key and gas tube come together during function.

d. Carrier key

Repair small dents and/or distortions using fabricated key tool (E-4, app E) as follows:

LOCATION ITEM ACTION REMARKS

REPAIR (CONT)

Place the key and bolt carrier assembly in a vertical position, supported in a manner that contact is made with the rear surface of the key.

Insert the small end of the key tool (E-4, app E) into the tube portion of the key.

Strike the large end of the key tool (E-4, app E) lightly with a 3-ounce, soft-brass hammer.

Repeat striking (gently) until the carrier key is reformed to original configuration.

LUBRICATION

Bolt Carrier Assembly All items

Lubricate using CLP (item 5, app O).

WARNING

Do not interchange bolt assemblies or components from one weapon to another. Doing so may result in injury to, or death of, personnel.

Bolt cam pin must be installed or weapon will blow up while firing the first round. If the cam pin is not installed, injury to, or death of, personnel may resui:-.

EDGE OF BENCH

KEY TOOL CARRIER KEY

EDGE OF BENCH

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