BCG's Bolt Carrier Group

Specifications: Mil-Spec Bolt Carrier Group 5.56mm Bolt C158 Carrier 8620 HPT & MPI Lot Tested Chrome Lined Gas Key & Carrier Phosphate Finish Dry Film Cam Pin All Components are Machined to Mil-Spec Standards 100% Made in the USA

Nickel Boron (NiB) is a durable bolt carrier group coating that provides reduced friction with excellent corrosion resistance. NiB impregnates the surface and becomes part of the metal. This process produces a surface harder than the metal itself. This...

High quality components and precise manufacturing make CMMG parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.

5.56 Bolt Carrier Group Black Phosphate Finish Mil-Spec Shot peened & MP tested bolt Full Auto carrier w/staked carrier key

CMC Triggers Enhanced Bolt Carrier Group was designed for shooters who demand superior performance weapon components in the heart of their firearm. CMC proudly manufacturers the highest quality firearms components in the industry. Carrier Assembly: The...