CMMG Resolute 16.10" Upper 5.7x28mm with 1:9 Twist Rate and M-LOK Rail - Carbine-Length with BCG and CH - Armor Black - 57B40E4AB

Overview

The CMMG Resolute upper receiver assembly is designed for the AR platform, chambered in 5.7x28mm. It features a 16.1-inch medium-tapered barrel with a 1:9 twist rate, constructed from 4140CM SBN steel. The assembly utilizes a radial delayed blowback operating system and is housed in a billet 6061 T6 aluminum upper receiver finished in Cerakote Armor Black. This upper group includes a bolt carrier group and a suite of CMMG ZEROED accessories, such as an ambidextrous charging handle, a polymer dust cover, and a ZEROED muzzle brake threaded 1/2x28. It is equipped with a CMMG EML15 M-LOK handguard. Designed for compatibility with the Mk57 lower or standard AR15 lower receivers when paired with 5.7 AR conversion magazines, this assembly weighs 4.0 lbs and has an overall length of 25.3 inches.

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