SKU: CMMG55A9D0B-AB
UPC: 810144722757
MPN: 55A9D0B-AB
The CMMG Resolute MK4 5.56 16.1" 30-Round Manual Safety Pistol delivers compact firepower designed for tactical operators, home defense professionals, and shooters prioritizing maneuverability without sacrificing capability. Built on the proven AR-15 platform, this 5.56 NATO pistol addresses the need for a short-barreled, legally compliant defensive tool that maintains full-power rifle cartridge performance. At just over one pound, the Resolute MK4 occupies the intersection of portability and practical stopping power, making it ideal for vehicle deployment, close-quarters scenarios, and situations where full-length rifles prove impractical.
The 16.1-inch barrel provides optimal velocity consistency with 5.56 ammunition while keeping overall length manageable for confined spaces—a critical advantage over shorter 7.5" or 10.5" pistol uppers that sacrifice muzzle energy and terminal ballistics. CMMG's manual safety mechanism offers intuitive control without relying on binary triggers or exotic firing systems, ensuring reliability in high-stress encounters where simplicity and redundancy matter most. The 30-round capacity standard magazine gives operators adequate ammunition reserves for home defense or duty-critical scenarios, while the modular upper/lower receiver design allows customization of optics, accessories, and ergonomic controls to match individual shooters' needs.
Law enforcement, military personnel, and civilian defensive shooters benefit from the Resolute MK4's proven platform reliability and aftermarket ecosystem. The AR-15-compatible receiver accepts standard furniture, rail systems, and optics mounts, enabling seamless integration with existing tactical setups. This pistol performs equally well as a backup rifle, secure-perimeter weapon, or primary home defense tool. Users should verify local and federal regulations regarding pistol configuration, barrel length, and registered status before purchase or deployment, as legal frameworks vary by jurisdiction.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
