CMMG AR-15 Bolt Carrier Group 6.5 Grendel, 6mm ARC, 22 ARC, 338 ARC Matte Black

This CMMG Bolt Carrier Group is designed to operate with either 6.5 Grendel or Hornady's 6mm ARC. It is fully assembled and ready to be dropped into any standard AR-15 variant chambered in these cartridges. It will not work in CMMG's MkW platform. FeaturesBolt: 9310 Steel, Phosphate FinishCarrier: 8620 Steel, Chrome Lined, Phosphate FinishExtractor: 4140 Steel, Phosphate Finish