INSPECT BOLT AND CARRIER ASSEMBLY PARTS.
a. Visually inspect firing pin assembly (1) for broken spring. If spring is broken, replace firing pin assembly.
b. Visually inspect firing pin assembly (1), breech bolt (2), firing pin sleeve keeper (3), firing pin sleeve (4), cam-pin assembly (5) and carrier assembly (6) for cracks and breaks. If either of these conditions are found, replace defective part.
c. Check breech bolt (2) firing pin hole (7). If 0.125 in. drill bit shank fits into the firing pin hole, replace breech bolt.
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