.223/5.56/300 BLK Complete Bolt Carrier Group - Nickel Boron w/ Logo

.223/5.56/300 BLK Complete Bolt Carrier Group - Nickel Boron w/ LogoBuilt for .223 Remington, 5.56 NATO, and .300 Blackout platforms, this complete bolt carrier group combines proven materials, Mil-Spec heat treatment, and a slick nickel boron finish for dependable function and easier cleaning. The M16-profile carrier is paired with a 9310 bolt, 17-4 stainless gas key and firing pin, plus an S-7 extractor for strength in high-wear areas. Shot peening and MPI inspection on the bolt add confidence for hard-use rifle builds.Features Compatible with .223 Remington, 5.56 NATO, and .300 Blackout M16-style auto carrier Nickel boron finish for smooth operation and easier maintenance Made in the USA Covered by BRD Limited Lifetime WarrantySpecifications Caliber Compatibility: .223 / 5.56 / .300 BLK Carrier Style: M16 / Auto Carrier Material: 8620 tool steel Bolt Material: 9310 tool steel Gas Key Material: 17-4 stainless steel Extractor Material: S-7 shock resisting tool steel Extractor Spring Material: Stainless steel music wire Firing Pin Material: 17-4 stainless steel Heat Treatment: Mil-Spec / military specifications Inspection: MPI (Mag Particle Inspected) Finish: Nickel Boron (NiB) Weight: 11.6 oz Length: 7.5 in.