CMMG Resolute 22 ARC 16.10in 15in M-LOK Upper

The CMMG Resolute Mk4 upper is chambered for the .22 ARC and configured for use on the AR-15 platform. It includes a 16.10-inch barrel and a 15-inch M-LOK handguard; the model name also references 7075-T6 aluminum. Designed to provide consistent function, the Resolute supports the Mk4 (AR-15) lineup's .22 ARC performance.

Key Specifications

• Model: 28B260CAB
• Caliber: .22 ARC
• Barrel length: 16.10 inches
• Barrel material: 4140 steel
• Handguard: 15-inch M-LOK
• Rate of twist: 1:7
• Construction noted in name: 7075-T6 Aluminum
• Platform: AR-15 (Mk4)
• Ballistic profile: 22-250 levels of ballistic performance

The Resolute upper delivers a straightforward, platform-compatible option for shooters seeking .22 ARC performance in an AR-15 form factor. With its 16.10-inch barrel, 1:7 twist rate, and extended 15-inch M-LOK handguard, it supports a range of applications from precision-focused shooting and training to small-game and varmint use. The design emphasizes consistent function within the Mk4 AR-15 lineup and integrates features suitable for modern builds.