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 5.56/.223/.300 BLACKOUT caliber complete Titanium Nitride Bolt Carrier Groups. Titanium Nitride is an extremely hard ceramic coating used in aerospace and military applications that improves the maintenance
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.