Angstadt Arms AR-15 Bolt Carrier Group 5.56 NATO Black Nitride

The heart of a reliable AR-15 build is a quality 5.56 bolt carrier group assembly. These are the same high quality BCG's we make for law enforcement and military groups around the world. Machined to mil-spec dimensions and finished in a beautiful black nitride finish, this bolt will continue to run and looks great doing so.Specifications:Machined from 8620 alloy steel with a QPQ black nitride finish5.56 Bolt is machined from Carpenter 158 tool steelHigh pressure tested (HPT) and magnetic particle inspected (MPI)Shot peenedM16-cut/full auto capable carrierProperly staked gas key secured to the carrier with grade 8 fastenersCarrier has forward assist serrations