CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Armor Black - 55BB40BAB

Upgrade your next AR-15 build with the CMMG Resolute MK4 5.56 Barreled Upper Receiver, designed for precision and durability. Featuring a 16.1" Chrome Moly barrel with a medium contour and a 1:7 twist rate, this upper receiver delivers superior accuracy and handling. The 1/2x28 threaded muzzle is equipped with the CMMG ZEROED muzzle brake, helping reduce recoil and improving follow-up shots.The barrel, made from 4140 chrome moly steel, is coated with a salt bath nitride finish for corrosion resistance and longevity. The mid-length gas system ensures smoother operation and recoil management, making it a reliable choice for any shooting scenario.The upper is machined from billet 6061-T6 aluminum with a durable black Cerakote finish, paired with the CMMG EML15 M-LOK handguard for added customization options. With a total weight of just 3.6 lbs and an overall length of 25 inches, this upper receiver provides excellent balance and maneuverability.Features: MK4 platform 5.56 NATO Direct impingement 16.1" barrel length, MT contour 1:7 barrel twist 4140 CM barrel material, salt bath nitride finish CMMG ZEROED muzzle brake 1/2x28 muzzle thread Mid-Length gas system Billet 6061-T6 aluminum upper receiver CMMG EML15 M-LOK handguard Black Cerakote finish Weight: 3.6 lbs Overall length: 25"