CMMG DISSENT MKG .45 ACP 6.5" - AR-15 Pistol

The CMMG DISSENT MKG .45 ACP 6.5" brings .45 ACP capability to an AR-15 pistol format — compact, versatile, and purpose-built for close-quarters use, truck guns, and shooters who need to move fast.

A semi-automatic AR-15 pistol chambered in .45 ACP, the CMMG DISSENT MKG .45 ACP 6.5" combines direct impingement operation with standard AR-15 architecture for straightforward reliability.

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 .45 ACP 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 .45 ACP velocity for defensive use while the carbine format provides handling advantages over handguns in a home or property defense role.

• Caliber: .45 ACP
• Barrel Length: 6.5"
• Gas System: Direct Impingement
• Handguard: Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 13‑Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Built on an AR-9 lower pattern with familiar AR-15 controls. Accepts Glock-pattern or COLT SMG-pattern magazines depending on model. Compatible with standard carbine buffer setups.

The upper and lower receivers are constructed from 7075 aluminum with a Type III Hardcoat Anodized finish — a durable combination that resists corrosion and maintains tight tolerances over an extended service life.

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.