CMMG 28A490FSG DISSENT MK4 22ARC 16.1 SNGRY

The CMMG 28A490FSG DISSENT MK4 22 ARC is a next-generation semi-automatic rifle built on the proven AR15 manual of arms platform, chambered in the Advanced Rifle Cartridge (22 ARC). This bufferless action carbine delivers ballistic performance comparable to the .22-250 Remington while maintaining the ergonomic familiarity operators expect from modern AR-pattern systems. The 16.1-inch barrel enables rapid target engagement across intermediate distances, making the DISSENT MK4 suitable for precision work, competitive shooting, and field applications where barrel length must balance velocity, accuracy, and maneuverability.

The rifle features CMMG's proprietary bufferless Compact Action, which eliminates the receiver extension and buffer tube required in conventional AR15 carbines. This design reduces overall system weight to 10.3 lbs and lowers reciprocating mass, improving handling characteristics in tight quarters. The non-reciprocating forward side charging handle allows shooters to keep their dominant hand on the grip while chambering rounds—a tactical advantage during force-on-force scenarios or speed courses. The DISSENT side-folding stock offers adjustable length of pull and an integrated cheek riser, enabling rapid adaptation to varied optic heights and shooter physiology without rail-mounted accessories.

This platform serves precision rifle enthusiasts, tactical trainers, and operators seeking an alternative to conventional 5.56 NATO carbines. The 22 ARC DISSENT excels in scenarios requiring extended effective range without excessive recoil or ammunition cost. Competitive shooters and small-game hunters benefit from the cartridge's flat trajectory and energy retention, while the modular AR15-derived design permits customization of rail systems, optics mounts, and trigger assemblies to match mission requirements.