CMMG Mk3, 308 Upper Receiver Group

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The CMMG Mk3, 308 Upper Receiver Group features an 18" heavy taper, 416 stainless steel barrel that makes a great balance between weight and rigidity. The Mk3 comes with a RKM15 KeyMod® hand guard, which reduces weight through eliminating un-utilized Picatinny rail interface, and a more ergonomic surface as it is "toothless", unlike Picatinny rail. The KeyMod hand guard accepts any number of the sling mounts, bi-pods, tactical sights and other KeyMod compatible accessories. The muzzle utilizes an A2 compensator with a 5/8"-24 thread. The CMMG Mk3, 308 Upper Receiver Group attaches to most AR-10 profile lower receiver assemblies. It is chambered for the 7.62 NATO cartridge (.308 Win), and has a 1:10" twist.
Manufacturer model #: 38BCC38.

  • Heavy taper, stainless steel barrel
  • RKM15 KeyMod hand guard
  • A2 compensator
  • Compatible with most AR-10 profile lower receivers
Web ID: 1410170741564