CMMG MK3 308 Bolt Carrier Group

SKU: 38BA423

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CMMG MK3 308 Bolt Carrier Group

This complete CMMG MK3 308 Bolt Carrier Group is a drop in solution for your next AR10/308 build. Machined from 8620 steel, the chrome lined carrier is finished in durable black phosphate. The bolt is machined from 9310 hardened steel and features a S7 tool steel extractor. Includes carrier, assembled bolt, stainless steel firing pin, cam pin, and firing pin retention pin.

Product Information



Part Type

Bolt Carrier Group, Upper Receiver Parts

Made in USA




Coating Type



260 Rem, 308 Win, 6.5 Creedmoor

Bolt Material

9310 Steel

Carrier Material

8620 Steel


Forward Assist Serrations


Standard DPMS AR10 Components

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