The CMMG Dissent MK4 is an AR-style semi-automatic rifle chambered in .22 ARC with a 16.1-inch threaded barrel finished in Tungsten. It has a black side-folding stock and ships with a 10-round magazine. The Dissent platform uses CMMG's radial delayed blowback action. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent MK4 
• Caliber: .22 ARC 
• Action: Semi Auto 
• Barrel Length: 16.1 in 
• Capacity: 10+1 rd 
• Color/Finish: Tungsten 
   

Detailed Features 

• 16.1-inch threaded barrel 
• Tungsten receiver finish with black side-folding stock 
• 10-round magazine included 
• AR-style layout on the MK4 pattern

CMMG Dissent MK4 owners in .22 ARC are drawn to the combination of the AR-style platform with a cartridge that fills a gap between .224 Valkyrie and larger rifle rounds. The radial delayed blowback system gets credit for running reliably with a wider range of ammunition than a direct-impingement setup. The folding stock is a practical addition that many owners appreciate for storage and transport.

The threaded barrel is a commonly cited plus for suppressor users, and the Tungsten finish is generally well-regarded for its durability. Some owners note the 10-round magazine capacity as a limitation for states without restrictions, though standard AR-pattern magazines are compatible after minor modification per CMMG's guidance.

The Dissent MK4 trigger splits opinion. Stock pull weight is acceptable for a factory trigger but draws upgrades from owners who shoot competitively or who want a lighter break. Overall, value perception is positive given the platform's chambering and build quality, though the .22 ARC ammo market is still developing.