The CMMG Dissent Mk3 is a semi-automatic pistol chambered in 8.6 BLK with a 12.5-inch barrel and a compact action. It has a 20+1 round capacity, comes with a brace in Coyote Tan, and uses a side-charging handle configuration. The Mk3 designation indicates a larger-format platform within the CMMG Dissent line. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent Mk3 
• Caliber: 8.6 BLK 
• Action: Semi Auto 
• Capacity: 20+1 rounds 
• Barrel Length: 12.5 inches 
• Color/Finish: Coyote Tan 
   

Detailed Features 

• Semi-automatic pistol on the Mk3 platform in 8.6 BLK 
• 12.5-inch barrel with compact action 
• Side-charging handle 
• Brace-equipped configuration 
• 20+1 round capacity in Coyote Tan finish

Owners of the CMMG Dissent Mk3 in 8.6 BLK are typically drawn to the caliber itself, which is a larger-diameter subsonic-optimized round that pairs with the platform's compact geometry. The side-charging handle is frequently mentioned as a functional improvement over standard charging handle placements, particularly for those running optics. The Coyote Tan finish gets consistent positive remarks for its appearance and durability.

The Mk3 platform is considered well-built by most owners, though the 8.6 BLK chambering means ammunition availability is a recurring topic. Some owners stock up heavily before purchasing, while others find the caliber's niche nature to be a drawback for regular range use. The brace configuration and compact action are appreciated for storage and transport.

At the price point the Dissent Mk3 commands, opinions on value are split. Buyers who are committed to the 8.6 BLK caliber generally feel the CMMG platform justifies the cost. Those comparing it to more established caliber options in similar pistol configurations sometimes question whether the caliber premium is worthwhile.