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CMMG
The CMMG Dissent Mk4 Brace in 9mm delivers the modularity of an AR platform in a compact, highly controllable package. Built on CMMG's proven Mk4 platform with a 6.5-inch barrel, this 9mm pistol bridges the gap between traditional AR ergonomics and the portability shooters want for defensive carry, close-quarters training, or fun at the range. The Dissent accepts proprietary CMMG 9mm AR conversion magazines that use the same profile as standard 5.56mm mags—no learning curve, no fumbling with unfamiliar mag releases. True double-stack feeding from top to bottom means faster, easier loading under pressure.
What sets the Dissent apart is its forward non-reciprocating side charger. Unlike traditional AR charging handles, this design keeps your support hand clear of the ejection port and lets you stay focused downrange while working the bolt. Pair that with the compact action-radial delayed blowback operating system and you've got a shooter-friendly platform that's genuinely soft-shooting for a 9mm AR. The CMMG ZEROED linear compensator helps manage recoil and muzzle rise, while the M-LOK handguard gives you clean, tactical real estate for lights, lasers, or grips. A 1913 Picatinny rail end cap accommodates slings, braces, or stocks to tailor the gun to your mission.
At just 4.6 pounds and 15.7 inches overall, the Dissent is nimble enough for movement-heavy drills or vehicle carry without sacrificing the controls and ergonomics you're already fluent with. The forged 7075 T6 aluminum receivers and quality CMMG ZEROED internals—single-stage trigger, safety, grip, trigger guard—mean you're getting a rifle that's built to last and tuned to shoot. Cerakote finish in Armor Black pairs durability with professional aesthetics. Two 30-round magazines are included.
| Brand | CMMG |
| Model | Dissent Mk4 |
| Caliber | 9mm |
| Barrel Length | 6.5 inches |
| Barrel Twist | 1:10 |
| Barrel Material | 4140CM SBN |
| Operating System | Compact Action-Radial Delayed Blowback |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 1/2 x 28 |
| Upper Receiver | Dissent 9mm, 7075 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Handguard | CMMG 5.5 Proprietary M-LOK |
| Charging Handle | DISSENT Side Charger (Left) |
| Pistol Grip | CMMG ZEROED |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | CMMG ZEROED |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Receiver Extension | 1913 Picatinny Rail End Cap |
| Magazines Included | 2x CMMG 30-round |
| Overall Length | 15.7 inches |
| Weight | 4.6 lbs |
| Finish | Cerakote Armor Black |
The Dissent fires CMMG 9mm AR conversion magazines, which feature the same profile as standard 5.56mm AR magazines. This means you get a familiar manual of arms and the visual recognition you're already used to, without carrying specialty mags. The included magazines hold 30 rounds each and use true double-stack feeding for fast, reliable loading.
The Dissent Mk4 ships with two 30-round CMMG magazines, giving you the core essentials to get on the range. You'll need to source ammunition and any optics or accessories separately, but the side charger, safety controls, and trigger are ready to go out of the box.
The DISSENT side charger is a forward non-reciprocating charging handle mounted on the left side of the upper receiver. Unlike traditional top-mounted AR chargers, it stays clear of your support hand and sight picture, letting you operate the bolt quickly without breaking your grip or line of sight to the target.
At 15.7 inches overall length and 4.6 pounds, the Dissent is compact enough for vehicle carry or home defense roles. The delayed blowback system and linear compensator help manage recoil in a 9mm platform. However, firearm choice for any specific legal use case is a personal decision—consult local laws and your training before selecting any gun for defense.
CMMG
The CMMG Dissent Mk4 Brace in 9mm delivers the modularity of an AR platform in a compact, highly controllable package. Built on CMMG's proven Mk4 platform with a 6.5-inch barrel, this 9mm pistol bridges the gap between traditional AR ergonomics and the portability shooters want for defensive carry, close-quarters training, or fun at the range. The Dissent accepts proprietary CMMG 9mm AR conversion magazines that use the same profile as standard 5.56mm mags—no learning curve, no fumbling with unfamiliar mag releases. True double-stack feeding from top to bottom means faster, easier loading under pressure.
What sets the Dissent apart is its forward non-reciprocating side charger. Unlike traditional AR charging handles, this design keeps your support hand clear of the ejection port and lets you stay focused downrange while working the bolt. Pair that with the compact action-radial delayed blowback operating system and you've got a shooter-friendly platform that's genuinely soft-shooting for a 9mm AR. The CMMG ZEROED linear compensator helps manage recoil and muzzle rise, while the M-LOK handguard gives you clean, tactical real estate for lights, lasers, or grips. A 1913 Picatinny rail end cap accommodates slings, braces, or stocks to tailor the gun to your mission.
At just 4.6 pounds and 15.7 inches overall, the Dissent is nimble enough for movement-heavy drills or vehicle carry without sacrificing the controls and ergonomics you're already fluent with. The forged 7075 T6 aluminum receivers and quality CMMG ZEROED internals—single-stage trigger, safety, grip, trigger guard—mean you're getting a rifle that's built to last and tuned to shoot. Cerakote finish in Armor Black pairs durability with professional aesthetics. Two 30-round magazines are included.
| Brand | CMMG |
| Model | Dissent Mk4 |
| Caliber | 9mm |
| Barrel Length | 6.5 inches |
| Barrel Twist | 1:10 |
| Barrel Material | 4140CM SBN |
| Operating System | Compact Action-Radial Delayed Blowback |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 1/2 x 28 |
| Upper Receiver | Dissent 9mm, 7075 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Handguard | CMMG 5.5 Proprietary M-LOK |
| Charging Handle | DISSENT Side Charger (Left) |
| Pistol Grip | CMMG ZEROED |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | CMMG ZEROED |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Receiver Extension | 1913 Picatinny Rail End Cap |
| Magazines Included | 2x CMMG 30-round |
| Overall Length | 15.7 inches |
| Weight | 4.6 lbs |
| Finish | Cerakote Armor Black |
The Dissent fires CMMG 9mm AR conversion magazines, which feature the same profile as standard 5.56mm AR magazines. This means you get a familiar manual of arms and the visual recognition you're already used to, without carrying specialty mags. The included magazines hold 30 rounds each and use true double-stack feeding for fast, reliable loading.
The Dissent Mk4 ships with two 30-round CMMG magazines, giving you the core essentials to get on the range. You'll need to source ammunition and any optics or accessories separately, but the side charger, safety controls, and trigger are ready to go out of the box.
The DISSENT side charger is a forward non-reciprocating charging handle mounted on the left side of the upper receiver. Unlike traditional top-mounted AR chargers, it stays clear of your support hand and sight picture, letting you operate the bolt quickly without breaking your grip or line of sight to the target.
At 15.7 inches overall length and 4.6 pounds, the Dissent is compact enough for vehicle carry or home defense roles. The delayed blowback system and linear compensator help manage recoil in a 9mm platform. However, firearm choice for any specific legal use case is a personal decision—consult local laws and your training before selecting any gun for defense.
