CMMG 16.1" 5.56 NATO barrel sub-assembly with M4 profile, black nitride finish, and pre-installed extension. 4140 chromoly steel construction for reliable AR-15 builds.
Fits: AR-15
This barrel sub-assembly from CMMG provides everything you need to build a quality AR-15 upper receiver group. The 16.1-inch barrel features a carbine-length gas system and M4 profile, making it a versatile choice for both new builders and experienced shooters.
The 4140 chromoly steel construction provides excellent durability and reliability. The black nitride finish protects against rust and wear while maintaining a professional appearance. At 16.1 inches, this barrel strikes a balance between velocity and handling, making it suitable for target shooting, training, and general purpose use.
The pre-installed M4 extension saves you time during assembly and ensures proper installation. Whether you're building your first AR-15 or your tenth, this barrel sub-assembly delivers the quality and precision CMMG is known for.