CMC Triggers 6mm ARC Enhanced Bolt Carrier Group

The CMC Triggers® 6mm ARC Enhanced Bolt Carrier Group boasts a hardened 4340 cam pin and a Mil-Spec 8740 steel firing pin for unparalleled durability. What's more, this BCG is MPI and HPT tested and the carrier is constructed from 9310 case hardened steel. To top it off, bolt components are shot peened and nitride coated. Optimized for suppressor use, this BCG features fewer points of contact for less friction area which creates an increase in mass for proper gas pressure and increased dwell time for improved extraction while shooting suppressed or short barreled rifles. Compatible with 6mm ARC. Backed by a lifetime warranty.