The CMMG Dissent MK4 is a modern sporting rifle chambered in 6mm ARC with a 16.1" barrel. It weighs 7.70 lbs and adjusts from 25.90" to 36.60" overall length thanks to its side-folding stock. 
 

Key Specifications 

• Brand: CMMG 
• Model Name: Dissent MK4 
• Caliber: 6mm ARC 
• Barrel Length: 16.1 inches 
• Capacity: 10+1 rounds (also available with a 30-round option) 
• Weight: 7.70 lbs 
• Overall Length: Adjustable from 25.90" to 36.60" 
• Safety Mechanism: CMMG Zeroed at 60/90 Degree 
• Trigger Type: Zeroed Drop-In Single Stage 
• Grip Style: Standard Grip 
• Stock Type: CMMG Dissent Side Folding Stock 
   

Detailed Features 

The Dissent MK4 has ambidextrous controls, accommodating left- and right-handed shooters. The CMMG Zeroed muzzle brake reduces recoil during rapid fire. The receiver is aluminum and the barrel is steel, keeping weight reasonable without sacrificing durability. An M-Lok handguard provides mounting points for lights or grips. The barrel twist rate is 1:7.50". 
 

Usage 

The folding stock makes the rifle easy to transport or store. The compact size works well for home defense where maneuverability in tight spaces matters. On the range, the 6mm ARC cartridge offers good accuracy and manageable recoil for competitive use.

Owners of the CMMG Dissent MK4 in 6mm ARC generally have positive reactions, with a few recurring criticisms worth noting.

The folding stock and compact profile get consistent praise for portability. The 6mm ARC caliber is well-regarded for accuracy and ballistics, and users frequently cite its usefulness for both target shooting and hunting given the balance of power and recoil.

Build quality feedback is mostly positive. Most users consider the construction solid and reliable under heavy use. The ambidextrous controls and M-Lok handguard make customization straightforward: common additions include optics, lights, and aftermarket grips.

The price draws some discussion. Many find it fair for the feature set, but it sits toward the higher end of the market, which gives some buyers pause. Ergonomics are generally comfortable, though individual preferences vary on grip and stock adjustments.

Ammo availability for 6mm ARC comes up periodically. The caliber is newer than .308 or 5.56, so selection is narrower and prices fluctuate more noticeably. Online CMMG communities are active and useful for maintenance tips and upgrade advice.