CMMG 55DE10A Barrel Sub-Assembly 5.56x45mm NATO 16.10" Black Nitride M4 Profile - 55DE10A

CMMG barrel sub-assembly chambered in 5.56x45mm NATO with a 16.10" carbine-length barrel featuring an M4 profile and black nitride finish. Constructed from 4140 chromoly steel with a 1:7" twist rate, designed for direct installation on AR-15 platforms. This complete barrel sub-assembly simplifies upper receiver builds by combining the barrel with necessary components.