CMMG RESOLUTE MK4 .300 Blackout 14.5 inches Tinm Carbine

The CMMG RESOLUTE MK4 .300 Blackout 14.5-inch Tinm carbine is a purpose-built platform engineered for operators who demand suppressed rifle performance without compromise. Chambered in .300 Blackout, this intermediate cartridge delivers subsonic and supersonic capability from a compact, controllable package ideal for tactical applications, home defense, and specialized operations where hearing protection and concealment matter. The 14.5-inch barrel length balances velocity retention with maneuverability in close-quarters environments, making this carbine a proven choice across law enforcement and military units.

Built on CMMG's RESOLUTE MK4 platform, this carbine features a modular, maintenance-friendly design that prioritizes reliability under stress. The .300 Blackout round's inherent versatility—cycling reliably from 147-grain subsonic loads through 220-grain hunting rounds—eliminates the need for carrier/bolt group changes common to other platforms. At 10.2 pounds fully configured, the rifle maintains a low-profile silhouette while the 14.5-inch barrel preserves critical dwell time and powder burn characteristics essential for consistent suppressed accuracy. The Tinm finish provides corrosion resistance and a matte aesthetic suited to tactical configurations.

Operators selecting the CMMG RESOLUTE MK4 .300 Blackout benefit from a rifle engineered for suppressor integration and rapid reconfiguration across mission profiles. Law enforcement tactical teams, military support elements, and civilian shooters requiring validated suppressed rifle performance will find this platform delivers proven handling characteristics and accuracy downrange. The compact 14.5-inch configuration and modular design accommodate standard AR-pattern aftermarket components, allowing customization of optics, furniture, and ergonomics to match individual loadout requirements and doctrine.