CMMG 16.10″ AR-15 Barrel Sub-Assembly – 5.56 NATO

Upgrade your AR-15 with the CMMG 16.10" AR-15 Barrel Sub-Assembly in 5.56 NATO. Built from premium 4140 Chromoly steel and finished in black nitride, this barrel ensures durability and superior performance. Its 16.10" length and midlength gas system, paired with a medium taper profile, provide optimal balance and accuracy. With a 1:7" twist rate, it stabilizes .223 REM/5.56 NATO rounds effectively. Ideal for custom builds, it includes an M4 barrel extension for seamless integration and reliable function.