The CMMG Dissent MK4 is a semi-automatic pistol chambered in 5.7x28mm with a 6.5-inch barrel, finished in midnight bronze. It's built around CMMG's AR-style platform, so the controls and manual of arms will feel familiar to anyone who has handled an AR. 
 

Key Specifications 

• Barrel Length: 6.5 inches 
• Caliber: 5.7 x 28mm 
• Capacity: 32+1 rounds 
• Weight: 4.60 lbs 
• Length Overall (OAL): 14.7 inches 
• Finish Color: Midnight Bronze 
• Condition: New in Box 
• Manufacturer: CMMG 
• Model Number: Dissent MK4 
• Type: Semi Auto Handgun - Tactical 
   

Features 

 
The Dissent ships optic-ready, so you can mount a red dot without additional machining. The ambidextrous safety works for left- and right-handed shooters alike. At 4.60 lbs and 14.7 inches OAL, it's larger than a conventional pistol -- closer in footprint to a short-barreled carbine. 
 
The 5.7x28mm cartridge produces noticeably less recoil than 9mm +P loads while running at higher velocity, which makes the Dissent easy to shoot quickly. The 32-round magazine capacity is a practical advantage for range sessions. 
 

Usage 

 
The Dissent fits a specific use case: shooters who want an AR-style manual of arms in a pistol-classified firearm, with the low-recoil characteristics of 5.7x28mm. Home defense users will appreciate the high capacity and manageable muzzle flip. The main trade-offs are 5.7x28mm ammunition cost and availability compared to 9mm, and the overall size, which is too large for conventional concealed carry.

Discussion around the Dissent MK4 in Midnight Bronze tends to focus on a few consistent themes. The finish gets positive attention -- midnight bronze is a distinctive look that stands out at the range. The 5.7x28mm chambering draws most of the substantive debate: fans point to the low recoil and high velocity as genuine advantages, particularly for fast shooting, while critics note that 5.7x28mm is more expensive and harder to find locally than 9mm.

The 32-round capacity is generally seen as a strength. Some users raise concerns about ergonomics during extended shooting sessions, given the pistol's size and weight. A few comments compare its price to pistol-caliber carbines that offer similar features at lower cost. Overall the reaction is positive among buyers who specifically wanted the 5.7 platform; those expecting a conventional pistol experience tend to find it bulkier than anticipated.