Our MkG GUARD Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using our Patent Pending Radial Delayed Blowback System. Unlike typical direct blowback systems, our 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.
While the CMMG GUARD 45 was design for .45 ACP , we have tested it, and are proud to say that it is safety rated to fire 450 SMC.
Our MkG Barrel and Bolt Kits are designed to work exclusively with our MkG Lowers, and a mil-spec upper receiver with enlarged ejection port. Other manufacturers’ receivers may work, but we cannot guarantee function or reliability. For more information regarding fitment, check with our Tech Support team.
CMMG will ship your firearm to the licensed dealer (FFL Holder) of your choice. To expedite the shipment of your firearm -- please provide the name, along with phone number and email of your FFL Dealer in the notes field at the bottom of the checkout screen. If this field is left blank, we will contact you within a few business days to determine which FFL you would like us to ship your CMMG to. We ship firearms to all states except CA and NY.
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