The Modular 9mm Pistol Platform

The CMMG Dissent MK4 represents a thoughtful approach to 9mm pistol design, leveraging the proven modularity of the AR platform while addressing the unique demands of 9mm ammunition.

Key Features

  • Radial Delayed Blowback Action: CMMG's proprietary compact action handles the full spectrum of 9mm loadings—from supersonic to subsonic—with consistent reliability
  • 33-Round Magazine Capacity: Uses CMMG 9mm AR conversion magazines with the same profile as 5.56mm magazines, ensuring familiar handling and true double-stack feeding
  • 6.5" Barrel with Linear Compensator: Zeroed design reduces muzzle rise while maintaining a compact footprint
  • Left-Side Charging Handle: Non-reciprocating design allows you to stay on target while charging the weapon
  • M-LOK Handguard: 5.5" free-floating design provides sleek accessory mounting options
  • Picatinny Brace Adapter: 1913 rail end plate accommodates slings, braces, or stocks for customized configuration
  • Tungsten Gray Receiver: Durable finish complements the modern aesthetic

Engineering Advantages

The fixed ejector design in the upper receiver, combined with a lightweight bolt carrier group, delivers reduced felt recoil and consistent performance across a wide range of ammunition types. This thoughtful engineering maintains broad lower receiver compatibility while optimizing 9mm performance.

The Right Tool for the Job

Whether you're exploring 9mm pistol shooting or building a dedicated platform, the Dissent MK4 delivers the modularity and reliability shooters expect from the AR platform, now optimized for 9mm ammunition.

Attributes

Action: Semi-Automatic
Barrel Length: 6.5"
Caliber: 9mm Luger
Capacity: 33+1
Grips: Black Polymer
Overall Length: 14.70"
Safety: Ambidextrous
Sights: Optic Ready
Weight: 4.6 lbs