The CMMG Dissent MK4 Pistol is a semi-automatic 5.56x45mm NATO pistol in charcoal green. Same core specs as the rest of the Dissent line (6.5-inch barrel, 4.6 lbs, 30+1 capacity) with CMMG's short-stroke gas piston system. 
 

Key Specifications 

• UPC: 810097507982 
• Action: Semi-Automatic 
• Caliber: 5.56x45mm NATO 
• Barrel Length: 6.5 inches 
• Capacity: 30 rounds (plus one in the chamber) 
• Finish: Charcoal Green 
• Weight: 4.6 lbs 
   

Detailed Features 

• Ambidextrous Safety: Functions for left- and right-handed shooters without modification. 
• Optic Ready Sights: No iron sights; mount your own optic directly to the receiver. 
• Black Polymer Grip: Maintains grip in wet or adverse conditions. 
• Short-Stroke Gas Piston: Keeps bolt carrier group cleaner than DI designs under sustained fire.

Feedback on the CMMG Dissent MK4 in charcoal green largely mirrors what users say about the rest of the Dissent line, with a few color-specific comments mixed in.

The compact, lightweight build gets consistent praise. 4.6 lbs for a 5.56 pistol is competitive. Reliability and accuracy at the range are reported as solid by most buyers. The piston system's cleaner operation is a point in its favor for shooters doing longer sessions or training drills.

Recoil management with the 6.5-inch barrel comes up as a mild concern for some shooters, particularly those used to longer barrels in this caliber. Price is the other common friction point. Opinions split between those who consider it fair for the feature set and those who feel it's above market for an AR pistol. The charcoal green finish draws its own commentary: most like it, though a few mention the color read differently in person than expected from product photos.

Solid pistol overall, with the same trade-offs as the broader Dissent platform.