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For decades, the buffer tube has been the one thing keeping AR pistols from getting truly compact. CMMG decided to do something about it. The Dissent MK4 runs a patent-pending direct impingement Compact Action that moves the entire recoil system into the upper receiver, using a dual spring pack riding above the bolt carrier. The result is a 5.56 NATO pistol with a 10.5 inch barrel and nothing hanging off the back, coming in around 18.7 inches overall. That puts it right in MK18 territory for size, and the flat rear of the receiver wears a 1913 Picatinny rail if you ever want to run an accessory back there.
Instead of a traditional rear charging handle, the Dissent uses a forward non-reciprocating side charger mounted in the handguard, so you can run the action without breaking your grip or coming off target. The trigger is a genuine TriggerTech AR-D two stage with a clean break around four pounds, which is a serious upgrade over the mil-spec triggers most factory guns ship with. Controls stay familiar AR-15 fare, so there is no learning curve, just a shorter, better balanced package.
The 10.5 inch barrel comes threaded 1/2×28 and topped with CMMG's Zeroed linear compensator, which pushes blast and concussion forward where it belongs on a short gun. An adjustable gas block lets you dial the system in for a suppressor or tune it to your favorite ammo, and the 9.6 inch M-LOK handguard with full-length top rail gives you plenty of real estate for lights, optics, and hand stops.
Between the durable Armor Black Cerakote finish, two included 30 round magazines, and CMMG's lifetime guarantee against material and workmanship defects, this is a well thought out package from a company that has built its reputation on doing short ARs right. If compact 5.56 capability is what you are after, the Dissent MK4 delivers it without compromise.
CMMG's Compact Action replaces the traditional buffer tube and spring with a dual spring pack that rides above the bolt carrier inside the upper receiver. The setup includes a rubberized stop to cushion the carrier at full stroke. Since nothing extends behind the receiver, the gun stays remarkably short while still running standard direct impingement operation.
Yes, and it is one of the better short 5.56 hosts out there for it. The barrel is threaded 1/2×28, and the adjustable gas block lets you turn gas down when running a can so the gun stays comfortable and reliable. The included Zeroed linear compensator spins off easily whenever you want to mount a suppressor.
The rear of the receiver features a 1913 Picatinny rail, so it accepts a wide range of rail-mounted accessories. Because there is no buffer tube, you are not limited to tube-style attachments like on a standard AR pistol. It ships from CMMG in pistol configuration as-is.
The Dissent uses a forward non-reciprocating side charging handle mounted in the handguard rather than the usual rear T-handle. It stays put while firing and lets you work the action without moving your firing hand or coming off target. The rest of the controls, including the mag release and bolt release, follow the familiar AR-15 layout.
| UPC | 810097509573 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 55A8D40-AB |
| Action | |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Capacity | 30 |
| Barrel Length | 10.5" |
| Product Type | AR |
| Safety | Manual Safety |
| Model |
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