CMMG120923796
CMMG Dissent MK4 6mm ARC 16.1" Rifle - Armor Black$1,787.77
Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent MK4 6mm ARC is a compact, modern sporting rifle built for hunters and long-range shooters who want serious ballistic performance in a package that doesn't weigh you down. 6mm ARC delivers the downrange authority of .243 Winchester or .308 Winchester from an AR-15 platform rifle—no need to step up to a heavier AR-10. The Dissent takes the familiar AR manual of arms and adds a forward-charging handle, side-folding stock, and precision-tuned components that make it equally at home at the range or in the field. This isn't a budget build; it's a purpose-built platform for shooters who value accuracy and ergonomics.
What sets the Dissent apart is its thoughtful spec sheet. The side-folding stock with adjustable length of pull and cheek riser lets you dial in your fit, while the 16.1-inch stainless barrel (1:7.5 twist) is optimized for 6mm ARC ballistics. The gas block is adjustable—critical for tuning performance with different ammunition. The free-floating M-LOK handguard with integrated top Picatinny rail gives you clean mounting options for optics, lights, or other gear. The forward non-reciprocating charging handle keeps you on target without the distraction of a side charging handle that moves, and the CMMG ZEROED muzzle brake helps manage recoil while you're making precision shots.
All the controls—safety, trigger guard, and pistol grip—are CMMG ZEROED components, part of a cohesive design philosophy. Two 10-round magazines are included, and the whole setup weighs 6.7 pounds unfolded (25.9 inches folded). This is a rifle that rewards you for learning its details, whether you're hunting mid-range game, competing at distance, or simply chasing tighter groups than you thought possible from an AR-15-sized platform.
| Caliber | 6mm ARC |
| Barrel Length | 16.1 inches |
| Barrel Material | 416 Stainless Steel |
| Barrel Twist | 1:7.5 |
| Platform | CMMG Dissent MK4 |
| Operating System | Direct Impingement (Compact Action) |
| Upper Receiver | 7075 T6 Aluminum |
| Lower Receiver | MK4 Forged 7075 T6 Aluminum |
| Handguard | CMMG 15-inch M-LOK with top Picatinny rail |
| Gas Block | Adjustable 0.750-inch |
| Gas Port Location | Rifle length |
| Charging Handle | Dissent Side Charger, reversible, non-reciprocating |
| Stock/Brace | DISSENT side-folding with adjustable length of pull and cheek riser |
| Muzzle Device | CMMG ZEROED Muzzle Brake, 5/8×24 threaded |
| Trigger | CMMG ZEROED drop-in |
| Safety Selector | CMMG ZEROED 60/90 degree |
| Pistol Grip | CMMG ZEROED |
| Trigger Guard | CMMG ZEROED |
| Magazines Included | Two 10-round CMMG magazines |
| Weight | 6.7 lbs (unfolded) |
| Length | 33.3–35.5 inches (unfolded); 25.9 inches (folded) |
| Finish | Cerakote Armored Black |
6mm ARC is designed to deliver rifle-caliber ballistics and stopping power in an AR-15-sized platform without the added weight and recoil of larger AR-10 guns. You get flatter shooting characteristics and the ability to reach out to distance, but in a carbine that's easier to carry and quicker to handle than a full-size .308.
The Dissent MK4 uses CMMG's proprietary magazine design—two 10-round magazines are included with the rifle. While the platform shares the AR-15 manual of arms and familiar controls, the Dissent is a distinct platform with its own component ecosystem, so not all AR-15 parts will interchange.
Yes, the gas block is adjustable. This allows you to tune the rifle's gas flow for reliable function with different ammunition loads and weights, which is especially useful when working up loads for 6mm ARC or switching between factory and handloads. Proper tuning can improve reliability, control recoil, and extend component life.
The Dissent MK4 comes with two 10-round magazines. Optics, ammunition, and other accessories are sold separately.
SKU: 120916757 • Weight: 1oz
Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent MK4 6mm ARC is a compact, modern sporting rifle built for hunters and long-range shooters who want serious ballistic performance in a package that doesn't weigh you down. 6mm ARC delivers the downrange authority of .243 Winchester or .308 Winchester from an AR-15 platform rifle—no need to step up to a heavier AR-10. The Dissent takes the familiar AR manual of arms and adds a forward-charging handle, side-folding stock, and precision-tuned components that make it equally at home at the range or in the field. This isn't a budget build; it's a purpose-built platform for shooters who value accuracy and ergonomics.
What sets the Dissent apart is its thoughtful spec sheet. The side-folding stock with adjustable length of pull and cheek riser lets you dial in your fit, while the 16.1-inch stainless barrel (1:7.5 twist) is optimized for 6mm ARC ballistics. The gas block is adjustable—critical for tuning performance with different ammunition. The free-floating M-LOK handguard with integrated top Picatinny rail gives you clean mounting options for optics, lights, or other gear. The forward non-reciprocating charging handle keeps you on target without the distraction of a side charging handle that moves, and the CMMG ZEROED muzzle brake helps manage recoil while you're making precision shots.
All the controls—safety, trigger guard, and pistol grip—are CMMG ZEROED components, part of a cohesive design philosophy. Two 10-round magazines are included, and the whole setup weighs 6.7 pounds unfolded (25.9 inches folded). This is a rifle that rewards you for learning its details, whether you're hunting mid-range game, competing at distance, or simply chasing tighter groups than you thought possible from an AR-15-sized platform.
| Caliber | 6mm ARC |
| Barrel Length | 16.1 inches |
| Barrel Material | 416 Stainless Steel |
| Barrel Twist | 1:7.5 |
| Platform | CMMG Dissent MK4 |
| Operating System | Direct Impingement (Compact Action) |
| Upper Receiver | 7075 T6 Aluminum |
| Lower Receiver | MK4 Forged 7075 T6 Aluminum |
| Handguard | CMMG 15-inch M-LOK with top Picatinny rail |
| Gas Block | Adjustable 0.750-inch |
| Gas Port Location | Rifle length |
| Charging Handle | Dissent Side Charger, reversible, non-reciprocating |
| Stock/Brace | DISSENT side-folding with adjustable length of pull and cheek riser |
| Muzzle Device | CMMG ZEROED Muzzle Brake, 5/8×24 threaded |
| Trigger | CMMG ZEROED drop-in |
| Safety Selector | CMMG ZEROED 60/90 degree |
| Pistol Grip | CMMG ZEROED |
| Trigger Guard | CMMG ZEROED |
| Magazines Included | Two 10-round CMMG magazines |
| Weight | 6.7 lbs (unfolded) |
| Length | 33.3–35.5 inches (unfolded); 25.9 inches (folded) |
| Finish | Cerakote Armored Black |
6mm ARC is designed to deliver rifle-caliber ballistics and stopping power in an AR-15-sized platform without the added weight and recoil of larger AR-10 guns. You get flatter shooting characteristics and the ability to reach out to distance, but in a carbine that's easier to carry and quicker to handle than a full-size .308.
The Dissent MK4 uses CMMG's proprietary magazine design—two 10-round magazines are included with the rifle. While the platform shares the AR-15 manual of arms and familiar controls, the Dissent is a distinct platform with its own component ecosystem, so not all AR-15 parts will interchange.
Yes, the gas block is adjustable. This allows you to tune the rifle's gas flow for reliable function with different ammunition loads and weights, which is especially useful when working up loads for 6mm ARC or switching between factory and handloads. Proper tuning can improve reliability, control recoil, and extend component life.
The Dissent MK4 comes with two 10-round magazines. Optics, ammunition, and other accessories are sold separately.
SKU: 120916757 • Weight: 1oz