Anderson .223/5.56 M16 Bolt Carrier Group – Black Nitride – B2-K630-AA00-OP

Anderson Manufacturing Complete M16 Bolt Carrier Group – NitrideNitrided M16 Bolt Carrier Group, made from 8620 steel, Bolt is made from 9310 steel MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with cam pin , firing pin and firing pin retainer..223 / 5.56 bolt assembly is compatible with .300BLK as well!Fully mil-spec constructionDurable Nitride finish9310 steel bolt is MPI tested8620 steel full-shroud M16 style bolt carrierProperly staked gas key