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Inspect buffer assembly (1, 2, or 3) for cracks or damage.

(a) Some old buffers (1) have a hole with pin installed which protrudes equally on each side approximately 1/32 inch.

(b) Some buffers (2) have a hole in the housing but no pin.

(c) New buffers (3) do not have a hole in buffer body or a pin

All configurations (1, 2, or 3) may be utilized. However, if cracked or damaged, replace.

2-20. LOWER RECEIVER AND EXTENSION ASSEMBLY (CONT).

c. INSPECTION (CONT)

Check free length of action spring (4). The free length must be between 11 3/4 inches minimum and 13 1/2 inches maximum. Do not attempt to adjust spring length.

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