CMMG DISSENT MK4 9mm 6.5″ Pistol, 33+1

About this product

The CMMG DISSENT MK4 is a 9mm AR-platform pistol built around modularity and controllable operation. It uses CMMG’s Compact Action radial delayed blowback system to provide consistent function across a wide range of 9mm loadings. Configuration highlights include a 6.50″ threaded barrel, a 5.50″ M-LOK handguard, a left-side non-reciprocating charging handle, and a factory Zeroed Linear Compensator. Suited for range training, competition-style shooting, and duty/training roles, the DISSENT MK4 emphasizes reliable feeding and familiar AR ergonomics.

Key Specifications

• Caliber is 9mm.
• Action is Semi-Auto using a Compact Action–Radial Delayed Blowback operating system.
• Capacity is 33 + 1.
• The barrel measures 6.50 inches and is threaded.
• The barrel twist is 1:10.
• Muzzle device is a CMMG ZEROED Linear Compensator.
• Muzzle thread specification is 1/2 x 28.
• The upper receiver is DISSENT 9mm 7075 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• Weight is approximately 4.60 lbs.

The DISSENT MK4 delivers AR-style handling in a dedicated 9mm pistol package with an emphasis on adaptability and consistent function across varied ammunition. Its mix of forged 7075 receivers, threaded 6.50″ barrel, M-LOK handguard and the TriggerTech AR-D trigger make it a practical option for shooters who value modularity, predictable controls, and a purpose-built 9mm platform for range use and training.

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