CMMG Resolute Upper Group 5.7x28mm 16.1in Armor Black

The CMMG Resolute Upper Group is a complete AR-platform upper built for 5.7x28mm operation and a carbine-style balance with a 16.1-inch barrel. It ships complete with a bolt carrier group and ZEROED accessories including an ambidextrous charging handle and a ZEROED muzzle brake. The free-float CMMG EML15 M-LOK handguard and billet 6061 T6 upper receiver provide a durable, accessory-ready platform for range and defensive use. This upper is offered in an Armor Black Cerakote finish and is intended for use with compatible lowers and magazines designed for 5.7x28mm.

Key Specifications

• Chambered in 5.7x28mm for PDW-style ballistics.
• The barrel measures 16.1 inches to deliver carbine handling.
• The barrel twist rate is 1:9.
• The barrel is made from 4140CM SBN steel.
• The operating system is radial delayed blowback.
• The upper receiver is billet 6061 T6 aluminum.
• The handguard is a CMMG EML15 M-LOK free-float design.
• Includes a CMMG ZEROED muzzle brake as shipped.
• The muzzle thread is 1/2 x 28.
• Finish is listed as Cerakote (Armor Black).

Purpose-built for shooters who prefer compact, high-velocity chamberings in an AR-style package, the Resolute Upper Group pairs a purpose-driven barrel and operating system with durable materials and a modern accessory-ready handguard. Its complete configuration, including a ZEROED charging handle and muzzle device, provides a straightforward path to range-ready performance while maintaining the versatility expected from an AR-platform upper.