The CMMG Dissent MK4 is a modern sporting rifle in 6mm ARC built around a side-folding stock and a direct impingement operating system. The aluminum receiver keeps weight down, and the whole package adjusts from 25.90" to 36.60" overall. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent MK4 
• Caliber: 6mm ARC 
• Barrel Length: 16.1 inches 
• Capacity: 10+1 rounds 
• Weight: 7.70 lbs 
• Overall Length (OAL): Adjustable from 25.90" to 36.60" 
• Safety Mechanism: CMMG Zeroed 60 / 90 Degree 
• Trigger Type: Zeroed Drop-In Single Stage 
• Grip Type: Standard Grip 
• Stock Type: CMMG Dissent Side Folding Stock 
• Finish Color: Black Armor Cerakote 
   

Detailed Features 

The barrel has a 1:7.50" twist rate. The CMMG Zeroed muzzle brake reduces felt recoil, which helps with follow-up shots in faster strings of fire. Controls are ambidextrous. 
 

Usage 

The folding stock is the defining practical feature here. It makes storage and transport straightforward. The compact form works for home defense in tight spaces. In the field, the 6mm ARC caliber handles medium-sized game reasonably well and holds accuracy at distance. On the range, the muzzle brake and single-stage trigger support competitive shooting where quick target transitions matter.

Owners generally like the CMMG Dissent MK4 in 6mm ARC, though a few consistent criticisms show up.

The folding mechanism draws consistent praise for portability and storage. The 6mm ARC caliber is well-regarded for accuracy and ballistics at range, and users often note it works for both target shooting and hunting. Build quality feedback is positive. The rifle holds up under regular use and people tend to trust it.

The M-Lok handguard and accessory-friendly layout make customization accessible, which matters to users who want to run lights, optics, or other attachments.

On the negative side, the price is the most common complaint. Comparable rifles can be found cheaper, and some buyers question whether the feature set justifies the cost. A few users also note the rifle is on the heavier side for its size at 7.70 lbs when fully configured, which becomes noticeable during extended carry. There's a minor learning curve to the folding mechanism for first-time users.

Ammo availability for 6mm ARC is a practical concern that comes up in community discussions. It's not as widely stocked as .223 or .308, and pricing is less predictable.