CMMG Dissent .22 ARC 16.1 Inch Complete Upper Receiver M-LOK Side Charger

The CMMG DISSENT upper group in .22 ARC (Advanced Rifle Cartridge) is built for shooters who want a compact, modern AR-15–compatible upper with premium features for tuning and adaptability. Designed around CMMG's direct-impingement Compact Action, the recoil system is contained within the upper receiver—eliminating the need for a traditional buffer tube and helping create a shorter, cleaner overall package. It features a forward, non-reciprocating side charging handle, an optics-ready top Picatinny rail, and an M-LOK handguard for flexible accessory mounting. An included 1913 Picatinny rear end plate makes it easy to configure with compatible stocks or accessories, while the adjustable gas block helps dial in performance for your ammunition and suppressor setup.

Product Highlights

• .22 ARC DISSENT upper group with direct-impingement Compact Action for a bufferless, compact AR-style setup
• Forward non-reciprocating side charging handle for fast manipulation without disrupting your firing grip
• M-LOK handguard and optics-ready Picatinny top rail for lights, lasers, grips, and optics
• Adjustable gas block and rifle-length gas system for refined tuning (including suppressed use)
• Compatible with Mil-Spec AR-15 lower receivers; includes a 1913 Picatinny rear end plate

Specs

• Brand: CMMG
• Model/Series: DISSENT (Upper Group)
• Caliber: .22 ARC (Advanced Rifle Cartridge)
• Barrel Length: 16.1 in (16.10 in)
• Twist Rate: 1:7
• Operating System: Direct Impingement
• Charging Handle: Non-reciprocating side charger (forward-mounted)
• Handguard: M-LOK (15 in, proprietary CMMG)
• Top Rail: Picatinny (optics ready)
• Gas System Length: Rifle-length
• Gas Block: Adjustable, .750 in
• Muzzle Threads: 1/2x28
• Included: 1913 Picatinny rail rear end plate
• Construction (per product designation): 6061-T6 aluminum
• Overall Length: 25.5 in
• Weight: 5 lb
• UPC: 810148627515
• Manufacturer Part Number: 28B940CTI