CMMG 28AB60CSG Dissent MK4 5.56 NATO 16.1" 31-Round Threaded Barrel Rifle

The CMMG 28AB60CSG Dissent MK4 5.56 NATO 16.1" rifle is a modern intermediate-length AR platform designed for tactical operators, law enforcement professionals, and trained civilian shooters who demand reliability in precision-driven environments. Built on CMMG's proven modular architecture, this rifle bridges the gap between the compact maneuverability of a pistol-caliber carbine and the ballistic performance of a full-length rifle. The 16.1-inch barrel provides optimal velocity, accuracy, and handling balance for both close-quarters and mid-range engagements typical of tactical deployments and home defense scenarios.

The Dissent MK4 features a threaded barrel design that accepts industry-standard suppressors and muzzle devices, giving operators flexibility to reduce signature or manage recoil dynamics based on mission requirements. The rifle ships with a 31-round magazine, meeting or exceeding capacity demands for extended engagements or training evolutions where frequent reloads compromise tactical advantage. At 10.3 pounds, the rifle achieves a combat-ready weight that minimizes fatigue during extended carry while maintaining sufficient mass for stable shooting from supported or unsupported positions. The modular CMMG platform allows straightforward customization of furniture, optics, and accessories without proprietary tooling, ensuring long-term supportability and parts availability.

Law enforcement agencies, military unit armorer shops, and experienced civilian marksmen will recognize the Dissent MK4 as a capable platform for duty, training, and defensive use. The 5.56 NATO chambering ensures ammunition commonality across professional and civilian shooting disciplines, simplifying logistics and cost management over the rifle's service life. The threaded barrel design makes this rifle ideal for operators integrating suppressors into their duty configuration—a standard practice in tactical operations where noise reduction enhances team communication and operational security. Compatibility with standard AR-pattern optics mounts, rail systems, and controls allows seamless integration into existing armory ecosystems or personal loadouts without requiring specialized adapters.