Product Description
The CMMG DISSENT MK4 upper group in .22 ARC (Advanced Rifle Cartridge) is built to add modern performance and flexibility to Mil-Spec compatible lower receivers. This 16.10-inch upper features a 6061-T6 aluminum receiver and an M-LOK handguard for lightweight strength and accessory-ready capability. CMMG’s patent-pending direct impingement Compact Action design keeps the action and recoil assembly within the upper receiver, helping reduce overall length and eliminate the need for a traditional buffer tube when used with the included 1913 Picatinny rear end plate. A forward, non-reciprocating side charging handle supports fast manipulation, while the adjustable gas block helps tune the system for suppressed use or different ammunition.
Product Highlights
- .22 ARC (Advanced Rifle Cartridge) DISSENT MK4 upper group designed for Mil-Spec compatible lowers
- 16.10-inch barrel with 1:7 twist rate for optimized .22-caliber performance
- Patent-pending direct impingement Compact Action stores recoil assembly in the upper for a more compact setup
- Forward non-reciprocating side charger for quick operation without disrupting sight picture
- Adjustable gas block and 1913 Picatinny rear end plate for suppression tuning and buffer-tube-free configurations
Specs
- Brand: CMMG
- Model: DISSENT MK4 Upper
- Type: Complete Upper Receiver Group
- Caliber: .22 ARC (Advanced Rifle Cartridge)
- Barrel Length: 16.10 in
- Twist Rate: 1:7
- Receiver Material: 6061-T6 Aluminum
- Handguard: M-LOK rail
- Charging Handle: Forward, non-reciprocating side charger (left-side standard on direct-impingement models)
- Gas System: Direct impingement with adjustable gas block
- Rear Interface: 1913 Picatinny rear end plate
- Finish/Color: Midnight Bronze (Cerakote)
- Weight: 6.3 lb
- MPN: 28B940CMB
- UPC: 810148627492
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