The CMMG Dissent Mk3 is a semi-automatic AR10-sized pistol chambered in 8.6 Blackout, with a 12.5″ barrel and two 20-round Magpul PMAGs. This configuration is finished in Midnight Bronze Cerakote and comes with an SB Tactical FS1913A aluminum folding brace.
The 4140CM barrel has a nitride finish, a medium taper contour and a fast 1:3 twist suited to short barrels and heavy .338 caliber bullets. The muzzle is threaded 5/8×24 and carries CMMG’s SVB brake. An adjustable 0.750″ gas block lets you tune the compact direct impingement system for suppressed or unsuppressed use. The Mk3 upper and billet lower are 7075-T6 aluminum, and the pistol has a reversible side charging handle, an 11″ CMMG handguard, a drop-in single stage trigger and a 60/90 degree safety selector.
Specifications
- Brand: CMMG
- Model: Dissent Mk3
- Manufacturer Part #: 33A380C-MB
- UPC: 810148629830
- Caliber: 8.6 Blackout
- Operating System: Compact action direct impingement
- Barrel: 12.5″ 4140CM, nitride finish
- Twist Rate: 1:3″
- Thread Pitch: 5/8×24
- Muzzle Device: SVB brake
- Gas Block: Adjustable, 0.750″
- Handguard: CMMG 11″
- Charging Handle: Reversible side charger
- Trigger: Drop-in single stage
- Safety: 60/90 degree selector
- Brace: SB Tactical FS1913A folding
- Capacity: 20 rounds
- Magazines: Two Magpul 20-round PMAGs
- Finish: Midnight Bronze Cerakote
Ships to a licensed FFL dealer for transfer. The buyer must pass the required background check and meet all federal, state and local laws.







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