Fail Zero Bolt Carrier Group - Lightweight 5.56mm Ar-15

Fail zero bolt carrier group lightweight 5.56mm ar-15

FEATURES
-Bolt & Extractor (5.56/.223 compatible)
-Lightweight Bolt Carrier
-Extractor
-Cam Pin
-Carrier Key
-Firing Pin

Other Features: Semi-auto bcg, exo nickel boron treated, drop in install for most mil-spec ar15 uppers, lightweight 21% lighter