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PRODUCT #45D69FA

Barrel and BCG Kit, 5" 4140CM, SBN, 45ACP

$449.95

$449.95

AR Parts Notice - State/local restrictions may apply in CT, DC, IL, MA, NJ, NY, or WA. Customers must review our Shipping Policy prior to ordering.

Barrel and BCG Kit, 5" 4140CM, SBN, 45ACP

The MkG 5” 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 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 5
Barrel Twist 1:16
Barrel Contour MT
Barrel Material 4140CM
Barrel Twist 1:16
Muzzle Thread 0.578 x 28
Gas Port Location N/A
Gas Block N/A
Finish SBN
Weight 1.3

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