CMMG DISSENT MK4 Pistol 9mm 6.5" - AR-15 Pistol

Running 9mm in an AR-15 chassis, the CMMG DISSENT MK4 Pistol 9mm 6.5" gives you reduced recoil, accessible ammunition costs, and a platform that shares controls with any AR-15 you already shoot.

Chambered in 9mm and running a direct impingement system, the CMMG DISSENT MK4 Pistol 9mm 6.5" is a semi-automatic AR-15 rifle engineered for consistent performance across a wide range of applications.

Competition Ready: Pistol caliber carbines are a growing force in USPSA and other competitions — this platform is well-suited for PCC-class competition straight from the box.

Reduced Operating Costs: Running 9mm cuts per-round costs compared to rifle ammunition, extending how long you can train on a set budget without giving anything up in terms of practice value.

Familiar AR-15 Controls: Standard AR-15 ergonomics mean any AR-trained shooter can transition to this PCC with minimal adjustment — the same manual of arms, the same muscle memory.

Effective Home Defense: The 6.5" barrel optimizes 9mm velocity for defensive use while the carbine format provides handling advantages over handguns in a home or property defense role.

• Caliber: 9mm
• Barrel Length: 6.5"
• Gas System: Direct Impingement
• Handguard: Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 33‑Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Runs on AR-9 pattern lowers with standard AR-15 controls. Check specific configuration for Glock-pattern or COLT-pattern magazine compatibility. Uses standard carbine or pistol buffer system.

Built from 7075 aluminum with a Type III Hardcoat Anodized finish, this AR-15 rifle holds up to sustained use without sacrificing dimensional accuracy or function.

Covers home defense, PCC competition, and affordable plinking. Popular with shooters who want to standardize on one pistol caliber across their handgun and carbine.

CMMG is recognized for their innovative radial-delayed blowback operating system, a uniquely reliable PCC design trusted by competitors and enthusiasts who demand consistent function. Made in the USA.