CMMG Mk4/AR-15 350 Legend 16.1" Barrel Sub-Assembly - Black Nitride

The CMMG Barrel Sub-Assembly is a replacement or build component chambered in 350 Legend for CMMG Mk4 and AR-15 upper receiver groups. Its 16.1" barrel provides a rifle-length barrel configuration for a compatible upper build.

CMMG machines this barrel from 4140 chrome-moly steel with a medium taper profile. The exterior has a black salt-bath nitride finish, while the bore uses a 1:16 twist. The threaded muzzle has a 1/2x28 thread pitch.

The barrel uses a carbine-length gas-port location and a .750" gas-block journal. A properly installed M4 barrel extension is included, and the barrel sub-assembly is properly headspaced. No sights are included or built into the assembly. Manufacturer-listed weight is 2 pounds.

This New component is supplied as a barrel sub-assembly with M4 barrel extension for a compatible CMMG Mk4 or AR-15 upper project.

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