CMMG Dissent MK4 9mm 10.5" 34-Round AR Pistol

The CMMG Dissent MK4 9mm 10.5" AR Pistol represents a modern platform purpose-built for shooters who demand compact firepower without sacrificing ergonomics or modularity. Designed around the AR-15 operating system, this 9mm pistol bridges the gap between traditional handguns and full-size carbines, making it ideal for home defense, vehicle storage, and specialized tactical applications. The 10.5-inch barrel delivers optimal velocity and accuracy in 9mm while maintaining the maneuverability required for close-quarters scenarios. With its 34-round magazine capacity, operators gain substantial firepower for extended engagements or training sessions.

CMMG engineered the Dissent platform using direct blowback operation, a proven design that reduces complexity while maximizing reliability in 9mm. The 10.5-inch barrel generates sufficient velocity to ensure reliable expansion of modern hollow-point ammunition while keeping overall profile compact at 13.5 inches with controls. The AR-15 architecture means standard controls, safety mechanisms, and charging handle manipulation remain intuitive for shooters with platform familiarity. The 34-round magazine capacity—derived from Glock-pattern dimensions—eliminates the need for exotic feeding solutions while providing substantial reserve ammunition. At 10 lbs, the system balances stability during firing with portability across vehicle and home environments.

Law enforcement trainers and civilian operators benefit most from this platform's versatility and AR-ergonomics, particularly those already invested in the modular ecosystem. The pistol excels in home defense setups where penetration concerns demand intermediate velocities, and in training environments where high-capacity magazines reduce reload frequency. Compatibility with standard AR-15 aftermarket furniture, triggers, and charging handle upgrades allows unlimited customization. Users should verify local regulations regarding barrel length, overall length restrictions, and any state-specific laws governing pistol-configured rifles before purchase.