The CMMG Dissent MK4 is an AR-style semi-automatic rifle chambered in .22 ARC with a 16.1-inch barrel and a Titanium finish. It accepts 10-round magazines. CMMG built the Dissent MK4 on their MK4 AR platform with the .22 ARC cartridge as the primary chambering. 
 

Key Specifications 

• Brand: CMMG 
• Model: Dissent MK4 
• Caliber: .22 ARC 
• Action: Semi Auto 
• Barrel Length: 16.1 in 
• Capacity: 10 rd 
• Color/Finish: Titanium 
   

Detailed Features 

• AR-style MK4 platform chambered in .22 ARC 
• 16.1-inch barrel 
• 10-round magazine 
• Titanium finish throughout

Owners of the CMMG Dissent MK4 in .22 ARC appreciate the purpose-built AR platform for the cartridge rather than a conversion. Build quality is consistently noted as solid, and the Titanium finish holds up well to regular handling. The Dissent MK4 name carries good recognition among CMMG fans who already trust the brand.

The .22 ARC chambering is a talking point that splits buyers. Those who sought it out specifically are satisfied with how the 16.1-inch barrel works with the cartridge. Others find that ammunition options are narrower than they expected, which limits range flexibility compared to more established AR calibers.

On value, the Dissent MK4 sits at a price point that draws some debate. Buyers who prioritized the .22 ARC chambering tend to view it as fair. Those who compared it against other AR-style options note that the caliber specificity is either the main draw or the main drawback, depending on what they wanted the rifle to do.