CMMG 8″ 300 Blackout AR-15 Barrel Sub-Assembly

Enhance your AR-15 with the CMMG 8" 300 Blackout Barrel Sub-Assembly, featuring 4140 Chromoly steel and a Black Nitride finish. This barrel's 1:7" twist rate ensures optimal bullet stabilization, while the pistol-length gas system and medium taper profile provide reliable cycling and accuracy. Perfect for custom builds, it includes an M4 barrel extension and is precisely headspaced for superior performance. Choose CMMG for unmatched quality and precision in your shooting experience.