The CMMG Dissent MK4 is an AR-pattern semi-automatic rifle chambered in 22 ARC with a 16.1-inch taper threaded barrel. It ships with a 10-round magazine and carries a Charcoal Green Cerakote finish over an M-Lok handguard. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent MK4 
• Caliber: 22 ARC 
• Action: Semi Auto 
• Barrel Length: 16.1 inches 
• Capacity: 10+1 
• Color/Finish: Charcoal Green Cerakote 
   

Detailed Features 

• 16.1-inch taper threaded barrel 
• Charcoal Green Cerakote finish 
• M-Lok handguard 
• 10+1 round capacity 
• AR-pattern (MK4) platform

Owners of the CMMG Dissent MK4 in 22 ARC appreciate the rifle's AR-pattern ergonomics combined with the 22 ARC chambering, which gives the platform a different capability profile than the more common AR chamberings. The Charcoal Green Cerakote finish draws consistent positive comments for its durability and understated appearance.

The M-Lok handguard receives good marks for accessory mounting flexibility. The taper threaded barrel is a practical addition that owners note opens up suppressor use without extra hardware. The 10-round magazine capacity is the most common gripe, particularly in states where higher-capacity magazines are legal.

The Dissent MK4 sits at a premium price point, and opinions split on whether the CMMG build quality justifies the cost over competitors. Reliability reports are generally favorable, though some owners note a break-in period before the action cycles consistently with all ammunition types.