Aero Precision APRH100070 Bolt Carrier Group 223 Rem,5.56x45mm NATO Nickel Boron Steel AR-15

This Nickel Boron bolt carrier is an eye catching addition to your AR build. It features Mil-spec dimensions and coating, is made of steel, with a shrouded firing pin, Mil-Spec extractor spring, black extractor insert, Viton O-ring and a tool steel extractor.