CMMG Rslt Mk4 5.56 NATO 16.1" 10-Round Rifle

The CMMG Resolute Mk4 in 6mm ARC with a 16.1-inch barrel represents a purpose-built intermediate cartridge rifle optimized for precision, terminal performance, and practical accuracy at extended ranges. The 6mm ARC cartridge delivers superior ballistics compared to standard 5.56 NATO while maintaining reliable function in a compact platform—making this rifle a solid choice for operators prioritizing accuracy and energy retention beyond 300 yards without stepping up to larger-frame platforms.

The 16.1-inch barrel balances velocity with maneuverability, allowing the 6mm ARC to develop adequate muzzle energy while keeping overall length practical for tactical roles. The rifle features a 15-inch free-float M-LOK handguard for tool-free accessory mounting, a zeroed CMMG muzzle brake for recoil management, and a zeroed pistol grip for immediate function out of the box. The Coyote Tan Cerakote finish provides corrosion resistance suitable for field operations across varied environments. A single 10-round magazine is included; this capacity reflects both the cartridge characteristics and the intended use profile of a precision intermediate rifle rather than a high-volume duty weapon.

This rifle serves shooters and operators seeking a lighter-recoiling, flatter-shooting alternative to 7.62×51mm NATO while maintaining superior long-range capability over 5.56 NATO. The 6mm ARC platform has gained adoption among precision rifle competitors, long-range hunters, and tactical rifle enthusiasts who value the ballistic advantages of a modern intermediate cartridge. The manual safety and semi-automatic action ensure straightforward operation and legal compliance. The CMMG Resolute Mk4 6mm ARC is well-suited for training, competition, and designated marksman applications where extended-range accuracy and moderate recoil are key requirements.