Elevate your AR-15 with the Faxon Firearms 5.56 M16 Nitride Bolt Carrier Group. Engineered for superior performance this bolt carrier is crafted from durable 9310 steel and features a resilient salt bath nitride finish that enhances corrosion resistance. Its full-auto rated design ensures compatibility with M16-style rifles while the 45-degree chamfered bolt lugs offer reliable action even under high-pressure scenarios. Each bolt undergoes meticulous MPI testing to guarantee flawlessness. The gas keys equipped with grade 8 fasteners are securely staked for enduring service. Enhanced with a spring insert and Crane O-Ring this component includes an S7 extractor for exceptional reliability. Experience unmatched durability and precision with this expertly designed bolt carrier group.