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Most AR pistols still drag a buffer tube around behind them. The CMMG Dissent Mk4 doesn't. CMMG's patent-pending Compact Action houses the entire recoil system inside the upper receiver, which trims this 10.5 inch barreled pistol down to about 18.7 inches overall and leaves the back of the gun wide open. A 1913 Picatinny rail end plate sits at the rear, ready for a folding brace or whatever setup fits you best. Fold it flat and you have a .30 caliber package that stows in a backpack without a fight.
300 Blackout was designed to burn its powder in short barrels, so the 10.5 inch tube here gives up almost nothing ballistically. The 4140 chrome moly barrel wears a 1:7 twist to stabilize everything from light supersonic loads to heavy 220 grain subsonics, and the 5/8×24 threaded muzzle comes capped with CMMG's Zeroed linear compensator that pushes blast forward instead of back at you. The adjustable gas block is the real gem for suppressor owners. Dial it down for a quiet subsonic can setup, open it up for supersonic range days, and the gun stays running either way.
CMMG gave the Dissent Mk4 fully ambidextrous AR controls plus a forward, non-reciprocating side charging handle that can be swapped to the left or right side. Charging the gun without breaking your grip or coming off target is a genuinely useful feature on a gun this size. The 7075-T6 aluminum receivers wear a durable Armor Black Cerakote finish, and the M-LOK handguard gives you real estate for lights and hand stops.
Instead of a gritty mil-spec unit, CMMG partnered with TriggerTech to develop the AR-D trigger specifically for the Dissent platform. The 4 pound pull breaks clean and resets fast, which makes an already controllable pistol easier to run quickly. Add the flat top receiver ready for your favorite red dot, two included 30 round magazines, and CMMG's lifetime quality guarantee, and this is a truck gun, home defender, and suppressor host all rolled into one tidy package.
No, it ships in pistol configuration with no rear furniture. The back of the lower receiver features a 1913 Picatinny rail end plate, so you can attach the folding brace or rear accessory that fits you best. That open rear is part of what keeps the overall length down to about 18.7 inches.
It is one of the better ones out there in this size class. The 10.5 inch barrel lets 300 Blackout reach nearly full potential, the muzzle is threaded 5/8×24 for easy can attachment, and the adjustable gas block lets you tune the gun for subsonic or supersonic loads. Running heavy subsonics through a suppressor on this platform is remarkably quiet and soft shooting.
CMMG's patent-pending Compact Action moves the entire recoil system into the upper receiver instead of running it back into a buffer tube. That is what allows the flat rear end plate and the ultra-short overall length. It still runs as a direct impingement gun, just packaged much tighter than a conventional AR.
Yes. The controls are ambidextrous, and the forward non-reciprocating side charging handle can be set up on either the left or right side of the handguard. That makes it easy to charge the gun without shifting your grip regardless of which shoulder you shoot from.
| UPC | 810097509641 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 30AC278AB |
| Action | |
| Barrel Length | 10.5" |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 30 + 1 |
| Color | Black |
| Model | |
| Product Type | AR |
| Safety | Lever Action |
| Sights | Optic Ready |
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