If roller (2) is replaced, install new pin (5) and new spring (4). Remove pin (5), roller (2), and spring (4) from breech bolt (6). Discard pin (5).


Install spring (4), roller (2), and new pin (5) into breech bolt (6).


This task covers: a. Disassembly b. Inspection/Repair c. Reassembly INITIAL SETUP

Tools and Special Tools

Shop Set, Small Arms: Field Maintenance, Basic Less Power, PN SC 4933-95-CL-A11; SL-3-08724A (Marine Corps only); SL-3-00607A (Marine Corps only)


Crocus abrasive cloth (item 3, WP 0074 00) Nut, Self-locking, PN MS21083-C6 Wiping rag (item 11, WP 0074 00)

Equipment Condition

Trigger housing assembly removed from weapon (TM 9-1005-313-10).

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