The CMMG MkGs Barrel and BCG Kit allows you to build a Pistol Caliber Carbine using the Patent Pending Radial Delayed Blowback System. Unlike typical direct blowback systems, the RDB uses a bolt that is forced to rotate and unlock, slowing the BCG. This results in a lighter BCG for a lighter rifle, and less felt recoil than a straight blowback system.

CMMG MkG Barrel and Bolt Kits are designed to work exclusively with CMMG MkG Lowers, and a mil-spec upper receiver with enlarged ejection port. Other manufacturers’ receivers may work, but function or reliability is not guaranteed . For more information regarding fitment, check with the CMMG Tech Support team.

ALL NFA RULES APPLY