Our Aero Precision .308 / 7.62 Bolt Carrier Group, Complete - Black Nitride, is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a Black Nitride finish, is MPI/HPT and now includes a laser engraved Aero Precision "A" logo!
AIM AR/M16 H4 .223/5.56 Nitride 9310 MPI Bolt Carrier Group. A newly designed carrier reduces the surface area contact between the carrier and receiver walls. This improves performance and reliability.
Bootleg 5.56 Assembled Nitride Bolt Carrier Group feature a matte Black Nitride finish. Complete Mil-Spec Assembly with Bolt, Bolt Carrier, and Firing Pin ready to drop into the AR upper of your choice.