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A2 FSB pinning

A2 FSB pinning




We align and pin an F marked (or if specified a non-F marked for fixed carry handle receiver builds) A2 front sight base to a barrel using MIL-STD 2/0 taper pins. Service includes a FSB complete with A2 style iron sight assembly and riveted sling loop. Hand guard cap, barrel nut, and delta ring assembly purchased separately.


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