The CMMG Dissent MK3 is a semi-automatic rifle chambered in .308 Win with a 16.1-inch barrel. It has an Armor Black finish and ships with a black stock. Capacity is 20 rounds. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent MK3 
• Caliber: .308 Win 
• Action: Semi Auto 
• Capacity: 20 
• Barrel Length: 16.1 inches 
• Color/Finish: Armor Black 
   

Detailed Features 

• 16.1-inch barrel in .308 Win 
• Armor Black finish 
• Black synthetic stock 
• 20-round capacity 
• MK3 AR-pattern platform

Owners of the CMMG Dissent MK3 in .308 Win appreciate the compact approach to a full-power cartridge, with the 16.1-inch barrel keeping the overall package manageable. The Armor Black finish draws positive comments for durability, though a few buyers note it shows handling marks more readily than some Cerakote alternatives.

The MK3 platform in .308 does generate noticeable muzzle blast from the shorter barrel, and this is a recurring topic in owner discussions. Those who pair it with a muzzle device or suppressor report a much more comfortable experience. The black stock is functional but some owners swap it out for a folding or adjustable option.

Value-wise, opinion splits between buyers who see the .308 Dissent as a well-made, compact precision-adjacent rifle and those who feel the MK3 platform commands a premium that requires justification. Build quality complaints are uncommon, and the 20-round capacity is viewed as practical for the chambering.