# CMMG Dissent MK4 Tactical .300 Blackout 14.5" Semi-Auto Handgun

**Brand:** CMMG
**Category:** Semi-Automatic Rifles
**Caliber:** .300 AAC Blackout

## Specifications

- **Caliber:** .300 AAC Blackout
- **Barrel Length:** 14.5"
- **Capacity:** 30 rounds
- **Weight:** 96 oz
- **Overall Length:** 24.9"
- **UPC:** 810144724591
- **SKU:** UCEGJAhYd

## Description

The CMMG Dissent MK4 is a semi-automatic .300 AAC Blackout handgun built for tactical use, sport shooting, and home defense. At 6.0 lbs and 24.9 inches overall with a 14.5-inch barrel, it stays compact while packing 30-round capacity.

### Key Specifications
- **Caliber:** .300 AAC Blackout
- **Barrel Length:** 14.5 inches
- **Capacity:** 30 rounds
- **Weight:** 6.0 lbs
- **Overall Length:** 24.9 inches
- **Condition:** New in Box
- **Finish Color:** Black
- **Manufacturer:** CMMG
- **Model Number:** Dissent MK4

### Features

The barrel is 4140 chrome-moly steel with salt bath nitride finishing for corrosion resistance and durability. A 1:7 twist rate stabilizes a wide range of bullet weights. The adjustable gas block lets you tune the action for different ammunition or suppress-equipped setups. CMMG's ZEROED muzzle device is pinned and welded and helps manage recoil while keeping accuracy on target. The direct impingement operating system keeps the cycling clean and reliable.

The compact size is genuinely useful in tight spaces, and the .300 Blackout caliber works well with subsonic suppressed loads, a combination that makes this a practical choice for home defense and hunting, not just range work.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> This is one of the coolest guns I've ever shot.
>
> — [Misha’s Guns](https://www.youtube.com/watch?v=AAgWJg2S3pc&t=220s)

> Final thoughts on this gun is that it passed with flying colors.
>
> — [Misha’s Guns](https://www.youtube.com/watch?v=AAgWJg2S3pc&t=261s)

> I can confidently say this might be my new favorite gun.
>
> — [Misha’s Guns](https://www.youtube.com/watch?v=AAgWJg2S3pc&t=266s)

> The rifle performed flawlessly no hiccups granted we maybe shot like 90 rounds.
>
> — [Misha’s Guns](https://www.youtube.com/watch?v=AAgWJg2S3pc&t=279s)

## What Customers Say

*AI-generated insights from customer reviews*

The CMMG Dissent MK4 gets good marks overall, with a few recurring points in discussions.

The compact size and lighter handling characteristics come up frequently as positives. Users like that .300 Blackout works well across multiple scenarios: subsonic suppressed loads for hunting or indoor use, supersonic for range work. Build quality feedback is consistently solid, and the shooting experience is described as smooth with manageable recoil.

Price is the main friction point. Some users think it's justified for the construction quality; others note that competing platforms offer comparable performance for less. A smaller group mentions wanting more model-specific accessory options. Ammunition availability for .300 Blackout, while better than it used to be, still draws occasional comments from buyers who don't already stock it.

Overall, most users recommend it for anyone who wants a capable compact .300 Blackout platform and isn't working from a tight budget.

## Pricing

**3 offers available**

| Vendor | Price |
|--------|-------|
| Shootingsurplus Com | $1755.99 |
| Buds Gun Shop | $1768.99 |
| Grabagun Com | $1799.99 |

## Similar Products

- [CMMG Resolute 300 Blackout Rifle - 14.5" Semi-Auto Powerhouse](https://gunsnation.com/p/cmmg-resolute-300-blackout-rifle-14-5-semi-auto-powerhouse/UCEGGNdth)
- [CMMG Dissent MK4: Compact 300 AAC Blackout Semi-Auto Pistol](https://gunsnation.com/p/cmmg-dissent-mk4-compact-300-aac-blackout-semi-auto-pistol/UCEGFyang)
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*Data from [GunsNation](https://gunsnation.com)*