CMMG 94B6829AB Dissent | 9mm | 6.50″ Barrel

The CMMG DISSENT 9mm upper group houses the action and recoil assembly entirely in the upper receiver, yielding a compact AR-platform solution for 9mm pistols and pistol-caliber carbines. This configuration includes a 6.50-inch barrel, a left-side non-reciprocating charging handle, and the CMMG ZEROED linear compensator finished in Armor Black Cerakote. The upper is compatible with Mk4/standard AR-15 lowers when used with CMMG 9AR conversion magazines, and it also fits MkG and Mk17 lower groups. Intended uses include range training and 9mm PCC competition.

Product Specifications

• The UPC is 810097509788.
• The caliber is 9mm.
• The barrel measures 6.50 inches.
• The operating system is Compact Action – Radial Delayed Blowback.
• The barrel twist rate is 1:10.
• The barrel contour is MT.
• The barrel material is 4140CM, SBN.
• The muzzle device is a CMMG ZEROED Linear Compensator.
• The muzzle thread is 1/2 x 28.
• The gas port location is N/A.
• The gas block is N/A.
• The upper receiver is DISSENT 9mm 7075 T6 Aluminum.
• The finish is Cerakote (Armor Black).
• The charging handle is a DISSENT Side Charger – Left.
• The handguard is a 4.60-inch M-LOK finished in Armor Black and the assembly includes a 1913 Picatinny rail end plate.

Compact and engineered for 9mm AR-platform builds, the DISSENT upper offers a reduced overall profile, an ergonomic left-side charging handle for bolt manipulation without losing sight picture, and a modular M-LOK handguard for accessory mounting. Its configuration suits builders and shooters who want a purpose-built 9mm upper for organized range sessions or competitive PCC matches.