CMMG Resolute MK4 5.56 AR-15 Barreled Upper Receiver Black 16.1" - $399.95

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 1/2x28 threaded muzzle is equipped with the CMMG ZEROED muzzle brake, which helps reduce recoil and improve 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"
SKU: 30030
UPC: 810103473461
MPN: 55BB40B-AB