The MkG 8” Barrel and BCG Kit in 45ACP allows 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.
MkG Barrel and Bolt Kits are designed to work exclusively with mil-spec upper receivers and our MkG Lowers. Other manufacturers’ receivers may work, but we cannot guarantee function or reliability.
**All NFA rules apply** See linked CMMG Resource article for more information.
All CMMG products come with our Lifetime Quality Guarantee.
TECHNICAL SPECIFICATIONS
| PLATFORM | MKG | 
| CALIBER | .45 ACP | 
| OPERATING SYSTEM | RADIAL DELAYED BLOWBACK | 
| BARREL LENGTH | 8 | 
| BARREL TWIST | 1:16 | 
| BARREL CONTOUR | MT | 
| BARREL MATERIAL | 4140CM | 
| BARREL TWIST | 1:16 | 
| MUZZLE THREAD | .578 X 28 | 
| GAS PORT LOCATION | N/A | 
| GAS BLOCK | N/A | 
| FINISH | SBN | 
| WEIGHT | 1.6 | 





