CMMG Resolute MK4 5.56 AR-15 Barreled Upper Receiver Black 16.1" barrel - $399.95 (FREE Shipping over $50)

Description

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 1/2×28 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
1/2×28 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″