CMMG 64BA44F 6.5 Grendel / 6mm ARC Bolt Carrier Group

Replacement firing pin, retaining pin, and cam pin for Mk57 firearms.

Replacement firing pin, retaining pin, and cam pin for Mk47 firearms.

The Enhanced Bolt Carrier Group for AR15/M16 platform weapons was designed to minimize carrier tilt and reduce friction inside the upper receiver by relocating key bearing surfaces. All materials,...

Stripped AR-15/M16 bolt carrier. Does not include gas key, bolt, or firing pin.

This bolt carrier group has been test fired and the gas key properly staked to give you the best possible product.