Description
Big bore power in a package that fits where most AR pistols can't. The CMMG Dissent MkG takes the .45 ACP, the same cartridge that inspired CMMG's Radial Delayed Blowback system in the first place, and drops it into their bufferless Dissent platform. Because the entire action and recoil assembly lives inside the upper receiver, there's no buffer tube hanging off the back. That's how you get a .45 caliber PDW that comes in at 15.7 inches overall and 4.9 pounds, with a side folding brace that makes it even easier to stash in a pack or bag.
How the Dissent MkG Runs So Smooth
The Compact Action pairs Radial Delayed Blowback with a fixed ejector and a lighter bolt carrier group, which translates to noticeably less felt recoil than a straight blowback gun and consistent cycling across a wide range of ammo loads. The 6.5-inch 4140CM barrel wears a salt bath nitride finish and a CMMG ZEROED linear compensator that pushes blast and concussion forward instead of back at you, a real courtesy to anyone standing next to you at the range. The muzzle is threaded 0.578×28 if you'd rather run your own device.
Built Like a CMMG, Feeds Like a Glock
The upper is machined from 7075-T6 aluminum and mated to a forged 7075-T6 MkG lower, all wrapped in Armor Black Cerakote. Controls are well sorted too: a forward non-reciprocating side charging handle that swaps to either side, a ZEROED drop-in single stage trigger, and a 60/90 degree ambi safety selector. The 5.5-inch M-LOK handguard with full-length top Picatinny rail gives you room for an optic, light, or laser. Best of all, it feeds from Glock pattern .45 magazines, and CMMG ships two 13-rounders in the box, so mags are affordable and easy to find.
CMMG backs the Dissent MkG with their lifetime quality guarantee, so this is a truck gun, trainer, or suppressor host you can count on for the long haul.
Key Specifications
- Manufacturer Part Number: 45A250F-AB
- UPC: 840442501471
- Caliber: .45 ACP
- Capacity: 13 + 1
- Barrel Length: 6.5 in
- Barrel Material: 4140CM, Salt Bath Nitride
- Barrel Twist: 1:16
- Operating System: Compact Action, Radial Delayed Blowback
- Muzzle Device: CMMG ZEROED Linear Compensator
- Muzzle Thread: 0.578×28
- Upper Receiver: DISSENT PCC 7075-T6 Aluminum
- Lower Receiver: MkG Forged 7075-T6 Aluminum
- Trigger: ZEROED Drop-In Single Stage
- Safety Selector: CMMG ZEROED 60/90 Degree
- Overall Length: 15.7 in
- Weight: 4.9 lbs
What’s Included
- CMMG Dissent MkG braced pistol
- Two 13-round Glock pattern magazines
- Locking device
- Owner's manual
Frequently Asked Questions
What magazines does the CMMG Dissent MkG use?
It runs Glock pattern .45 ACP magazines, and CMMG includes two 13-round mags in the box. That's a big plus since Glock mags are inexpensive, durable, and stocked just about everywhere. Higher capacity Glock .45 mags will feed it too if you want more rounds on tap.
How does the bufferless design work on the Dissent MkG?
CMMG's Compact Action houses the entire action and recoil assembly inside the upper receiver, so there's no buffer tube extending off the back. Paired with the Radial Delayed Blowback system and a lighter bolt carrier group, you get a shorter, handier gun with less felt recoil than a typical straight blowback .45. It also cycles reliably across a wide range of ammo loads.
Does this version of the Dissent MkG come with a brace?
Yes, this is the braced configuration and it ships with a side folding stabilizing brace mounted to the 1913 Picatinny rail end plate at the rear of the receiver. Folded, the whole package stays extremely compact for storage or transport. The Picatinny interface also means you can swap rear accessories if you like.
Is the CMMG Dissent MkG a good suppressor host?
It's a natural fit for one. The barrel is threaded 0.578×28 under the ZEROED linear compensator, and .45 ACP is inherently subsonic in most standard loads, which makes for a very pleasant suppressed setup. The Radial Delayed Blowback action also tends to run cleaner and softer suppressed than straight blowback designs.



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