CMMG AR-15 Resolute 300 Mk57 Radial Delayed Blowback Upper Receiver Assembly 5.7x28mm 16" Barrel M-LOK Handguard

CMMG’s Resolute is engineered with purpose for those who refuse to compromise on quality. The Resolute features a medium tapered barrel designed for balance, accuracy and maneuverability. The Resolute offers a billet 6061 T6 Aluminum upper receiver assembly with a bolt carrier group, and a Cerakoted receiver and handguard. Whether it’s hunting, personal defense, or target shooting, this RESOLUTE Upper Group is just the thing to finish your next carbine build. Combine this RESOLUTE Upper Group with either the Mk57 Lower or a standard AR15 lower group and CMMG’s 5.7 AR Conversion Magazines and you’ll be ready to hit the range!

Features

ZEROED AR15 Polymer Dust Cover
ZEROED AR15 Ambi Charging Handle
ZEROED Muzzle Brake