Product Description
Fail zero full auto bcg lightweight 5.56mm ar-15 Other Features: Full-auto bcg, exo nickel boron treated, drop in install for most mil-spec ar15 uppers, lightweight 21% lighter
Fail Zero Bolt Carrier Group 5.56 NATO / .223 Rem for M16 / M4
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Fail Zero 458 SOCOM Bolt Carrier Group NO HAMMER NIB
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