CMMG 12.5″ .223 Rem BBL Sub Assembly for AR15

Description

The CMMG 12.5″ .223 Rem BBL Sub Assembly is ideal for building your custom AR15 upper group. Featuring a properly installed M4 barrel extension, this barrel sub-assembly is meticulously headspaced for optimal performance. It boasts a 5.56×45 NATO chamber, a multi-role profile, and is crafted from durable 4140 chrome moly with a salt bath nitride finish inside and out for enhanced longevity. With a 1:7 twist rate and a threaded 1/2-28 muzzle, this assembly includes a carbine length gas port and a .750 gas journal, ensuring reliability and accuracy in every shot. Upgrade your firearm with the precision and quality of CMMG.