CMMG 60AF30CMB RESOLUTE MK4 16.1" Rifle

The CMMG 60AF30CMB RESOLUTE MK4 6mm ARC 16.1" rifle represents a purpose-built platform engineered for extended-range performance from an AR15-format receiver. The 6mm ARC cartridge delivers ballistic characteristics that rival larger AR10/LR308 systems while maintaining compatibility with standard AR15 receivers and magazines, making it a practical choice for operators and precision shooters seeking range capability without platform redesign.

This RESOLUTE MK4 configuration ships with CMMG's ZEROED component package, including a drop-in single-stage trigger, ambidextrous safety lever with 60/90-degree short and long throw options, ambidextrous magazine catch, and extended magazine release button—features that streamline operation across support-hand transitions and reduce training overhead. The Enhanced Modular Lightweight (EML) handguard features full-length M-LOK slots on both sides and the bottom, plus M-LOK positions between top picatinny rail sections, providing flexible accessory mounting for optics, lighting, and support gear. At 10.8 lbs and 39.6" overall length, the rifle remains manageable for vehicle operations and indoor tactical environments while the 16.1" barrel optimizes velocity and sight radius for precision fire at extended distances typical of 6mm ARC applications.

This platform serves precision-focused operators, competitive shooters, and hunters who prioritize ballistic performance and shot-to-shot consistency over magnum recoil. The 6mm ARC cartridge excels in intermediate-to-extended range scenarios—200 to 500+ yards—where its velocity, sectional density, and wind-bucking characteristics outperform 5.56 NATO. The RESOLUTE MK4's factory-integrated trigger and safety components reduce mechanical variables and installation complexity, allowing shooters to focus on marksmanship rather than platform tuning.