An idler sprocket shaft from the track assembly can be used to push on rear of firing pin sleeve.
c. Place breech bolt face (7) on a solid surface so that firing pin sleeve keeper slot (8) is exposed. Push rear of firing pin sleeve (5) down.
d. Install firing pin sleeve keeper (9) in slot (8) so that it is flush with surface of breech bolt (1).
3. LOCK BREECH BOLT.
a. Turn bolt and carrier assembly (10) over so that only rear of breech bolt (1) rests on a solid surface.
b. Place hand on each side of carrier track path (11) and push down until breech bolt (1) locks.
4. INSTALL BOLT AND CARRIER ASSEMBLY (WP 0054 00).
5. INSTALL BOLT AND TRACK ASSEMBLY (WP 0053 00).
6. PERFORM AUTO GUN RECEIVER MANUAL CYCLE CHECK (WP 0008 00).
7. INSTALL AUTOMATIC GUN FEEDER (WP 0026 00). END OF WORK PACKAGE
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