CMMG145479046
Cmmg Dissent 60Ab40C-Ab Br4 6Mm 16.1 *Ca Armbk$1,833.02
Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent BR4 9mm is a modern pistol-caliber carbine that brings rifle ergonomics and handling to a compact, magazine-fed platform. Built on CMMG's proven Radial Delayed Blowback operating system, the Dissent BR4 chambers the affordable and readily available 9mm cartridge while delivering reliable performance at the range or in the field. If you've written off PCCs as gimmicks, this one's worth a closer look.
The 16.1-inch barrel is paired with a 1:10 twist rate optimized for 9mm ballistics, and it wears a CMMG ZEROED muzzle brake to manage recoil and help with shot recovery. The upper and lower receivers are both machined from 7075 T6 aluminum and finished in Cerakote for durability in any weather. The integrated 15-inch handguard gives you room to mount lights, lasers, or other accessories, and the reversible side-charging handle keeps your grip hand in the fight. The Dissent BR4 feeds from CMMG's proprietary 10-round magazines, which ship with the rifle; it'll also accept other STANAG-pattern magazines if you migrate to another Dissent Mk4 upper later.
The ergonomic package includes a reversible cross-bolt safety, a Magpul SGA stock, and a ZEROED drop-in single-stage trigger that breaks cleanly. At 7.8 pounds and 38.1 inches overall, it's light enough to move around but substantial enough to feel like a rifle in your hands—not a stretched pistol. This is a reliable, shootable PCC for those who want rifle-grade controls and the cost efficiency of 9mm ammunition without compromise.
| Caliber | 9mm |
| Operating System | Compact Action–Radial Delayed Blowback |
| Barrel Length | 16.1 inches |
| Barrel Twist | 1:10 |
| Barrel Material | 4140CM Chrome-Moly |
| Barrel Contour | MT |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Threading | 1/2 x 28 |
| Upper Receiver | 7075 T6 Aluminum |
| Lower Receiver | Billet 7075 T6 Aluminum (BR4 platform) |
| Handguard | CMMG 15-inch Proprietary |
| Finish | Cerakote |
| Charging Handle | DISSENT Side Charger, Reversible |
| Stock/Brace | Magpul SGA |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | Reversible Cross Bolt |
| Magazines Included | Two 10-round CMMG 9mm |
| Weight | 7.8 lbs |
| Overall Length | 38.1 inches |
The BR4 ships with two 10-round CMMG proprietary 9mm magazines and uses CMMG 10-round magazines as standard. The lower receiver will also accept other STANAG-pattern magazines if you install a different Mk4 DISSENT upper group in the future.
Yes. The Dissent BR4 lower is designed to accept other DISSENT Mk4 upper assemblies, giving you the flexibility to change configurations if desired.
Yes. The Dissent side charger is fully reversible, and the cross-bolt safety is also reversible, making this rifle adaptable for either right- or left-hand operation.
The rifle ships with two 10-round CMMG 9mm magazines. No other accessories are included.
SKU: 145480072 • Width: 10.1in • Height: 3.4in • Depth: 40.8in • Weight: 10.71oz
Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent BR4 9mm is a modern pistol-caliber carbine that brings rifle ergonomics and handling to a compact, magazine-fed platform. Built on CMMG's proven Radial Delayed Blowback operating system, the Dissent BR4 chambers the affordable and readily available 9mm cartridge while delivering reliable performance at the range or in the field. If you've written off PCCs as gimmicks, this one's worth a closer look.
The 16.1-inch barrel is paired with a 1:10 twist rate optimized for 9mm ballistics, and it wears a CMMG ZEROED muzzle brake to manage recoil and help with shot recovery. The upper and lower receivers are both machined from 7075 T6 aluminum and finished in Cerakote for durability in any weather. The integrated 15-inch handguard gives you room to mount lights, lasers, or other accessories, and the reversible side-charging handle keeps your grip hand in the fight. The Dissent BR4 feeds from CMMG's proprietary 10-round magazines, which ship with the rifle; it'll also accept other STANAG-pattern magazines if you migrate to another Dissent Mk4 upper later.
The ergonomic package includes a reversible cross-bolt safety, a Magpul SGA stock, and a ZEROED drop-in single-stage trigger that breaks cleanly. At 7.8 pounds and 38.1 inches overall, it's light enough to move around but substantial enough to feel like a rifle in your hands—not a stretched pistol. This is a reliable, shootable PCC for those who want rifle-grade controls and the cost efficiency of 9mm ammunition without compromise.
| Caliber | 9mm |
| Operating System | Compact Action–Radial Delayed Blowback |
| Barrel Length | 16.1 inches |
| Barrel Twist | 1:10 |
| Barrel Material | 4140CM Chrome-Moly |
| Barrel Contour | MT |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Threading | 1/2 x 28 |
| Upper Receiver | 7075 T6 Aluminum |
| Lower Receiver | Billet 7075 T6 Aluminum (BR4 platform) |
| Handguard | CMMG 15-inch Proprietary |
| Finish | Cerakote |
| Charging Handle | DISSENT Side Charger, Reversible |
| Stock/Brace | Magpul SGA |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | Reversible Cross Bolt |
| Magazines Included | Two 10-round CMMG 9mm |
| Weight | 7.8 lbs |
| Overall Length | 38.1 inches |
The BR4 ships with two 10-round CMMG proprietary 9mm magazines and uses CMMG 10-round magazines as standard. The lower receiver will also accept other STANAG-pattern magazines if you install a different Mk4 DISSENT upper group in the future.
Yes. The Dissent BR4 lower is designed to accept other DISSENT Mk4 upper assemblies, giving you the flexibility to change configurations if desired.
Yes. The Dissent side charger is fully reversible, and the cross-bolt safety is also reversible, making this rifle adaptable for either right- or left-hand operation.
The rifle ships with two 10-round CMMG 9mm magazines. No other accessories are included.
SKU: 145480072 • Width: 10.1in • Height: 3.4in • Depth: 40.8in • Weight: 10.71oz