The Fail Zero Bolt Carrier Group is a complete 5.56 NATO semi-auto AR-15 accessory featuring a bolt and extractor compatible with both 5.56 and .223 ammunition. The assembly includes the bolt carrier, extractor, cam pin, carrier key, and firing pin.
This semi-auto BCG is finished with EXO Nickel Boron treatment and constructed from steel. Measuring 1.65″ in height, 3.80″ in width, and 10.30″ in length, it is designed as a drop-in installation for most MIL-SPEC AR-15 uppers. Note: this item cannot be shipped directly to California.
