Cmmg Dissent Mk3 Braced 308Win 12.5 Armor Black

The CMMG Dissent Mk3 Braced 308Win 12.5 is a compact, powerful alternative for shooters who want .308 Winchester capability in a maneuverable package. Built on the proven Mk3 platform, this braced pistol delivers the hard-hitting ballistics of a full rifle cartridge without the length or weight of traditional long-gun setups. The 12.5-inch barrel trades extreme distance for speed and versatility—ideal for close-quarters work, vehicle storage, or shooters who prioritize mobility and rapid target engagement.

This CMMG runs a compact direct-impingement system with an adjustable 0.750-inch gas block, letting you tune the action to your ammo and shooting conditions. The side-charging handle is reversible for left or right-hand operation, and the proprietary 11-inch handguard gives you plenty of real estate for mounting lights, lasers, or other mission-critical gear. The CMMG ZEROED linear compensator manages recoil without excessive noise signature, while the 5/8x24 thread pitch is standard across the industry. Cerakote armor black finish resists the elements and keeps things looking professional. At 7.3 pounds and 23 inches overall, it's a genuinely compact shooter that doesn't sacrifice ergonomics or control.

The Dissent ships with two Magpul 20-round PMags so you're ready to run right out of the box. The rear 1913 Picatinny rail end plate accepts stocks, sling mounts, and other accessories for customization. CMMG's ZEROED trigger is a single-stage drop-in, and the 60/90-degree safety selector is ambidextrous. Upper and lower receivers are billet 7075-T6 aluminum for strength and accuracy. This is a serious short-range fighting pistol that doesn't compromise on .308 power.

Key Features

• CMMG Mk3 platform with compact direct-impingement operation
• 12.5-inch 4140CM nitride-finished barrel with 1:10 twist
• Adjustable gas block for ammunition and load tuning
• Reversible side-charging handle for ambidextrous operation
• CMMG ZEROED linear compensator (5/8x24 thread) to manage recoil
• Proprietary 11-inch handguard with ample mounting space
• Billet 7075-T6 aluminum upper and lower receivers
• ZEROED single-stage trigger and ambidextrous 60/90-degree safety
• 1913 Picatinny rail end plate for stock and accessory options
• Cerakote armor black finish for durability and aesthetics
• Ships with two Magpul 20-round PMags

Specifications

Frequently Asked Questions

Is the CMMG Dissent Mk3 Braced 308Win suitable for long-range shooting?

The 12.5-inch barrel is engineered for close to mid-range work rather than extended-distance shooting. If long-range performance is your priority, a full-length rifle setup will serve you better. This Dissent excels where maneuverability, rapid engagement, and compact storage matter most.

Can I change the safety selector to left-handed operation?

Yes. The CMMG ZEROED safety is a 60/90-degree ambidextrous design, so it functions for both right and left-hand shooters.

What accessories can I mount on the 1913 Picatinny rail?

The 1913 Picatinny rail end plate on the rear of the receiver accepts standard Picatinny-mounted accessories such as sling attachments, folding stocks, and other rail-compatible gear. The 11-inch proprietary handguard also provides mounting space for optics, lights, and other tactical equipment.

What magazines work with this pistol?

The Dissent Mk3 ships with two Magpul 20-round PMags (.308 Win). Standard .308 Winchester magazines with the appropriate dimensions will work with the platform.