CMMG AR-15/Mk4 .22 LR 16.1" Replacement Barrel Kit - Black Nitride

The CMMG Replacement Barrel Kit provides the barrel and collar needed for a dedicated .22 LR AR-15 upper. Built for the AR-15/CMMG Mk4 platform, the included collar replaces the chamber adapter used with a CMMG .22 AR conversion.

This kit centers on a 16.1" M4-contour barrel chambered in a .22 LR sporting chamber. Its 4140 chrome-moly steel construction receives a black salt-bath-nitride finish inside and out.

The barrel uses a 1:16 twist, 1/2x28 muzzle threads, and a .750" carbine-length journal for dedicated rimfire upper assembly.

Included are one 16.1" barrel and one barrel collar. This is a New component kit.