# CMMG Dissent Mk4 .300 AAC Blackout 6.5in Midnight Bronze

**Brand:** CMMG
**Category:** Handguns
**Caliber:** .300 AAC Blackout

## Specifications

- **Caliber:** .300 AAC Blackout
- **Barrel Length:** 6.5"
- **Finish:** Midnight Bronze Cerakote
- **UPC:** 840442500948
- **SKU:** UCEnNb5Eq

## Description

The CMMG Dissent Mk4 (30A2D0F-MB) is a semi-automatic AR-pattern pistol chambered in .300 AAC Blackout. It runs a 6.5-inch barrel and CMMG's bufferless Compact Action direct-impingement system, which moves the recoil mechanism into the upper receiver and removes the need for a buffer tube. The pistol wears a Midnight Bronze Cerakote finish over its 7075-T6 forged aluminum receivers.

### Key Specifications
- **Brand:** CMMG
- **Model:** Dissent Mk4
- **Caliber:** .300 AAC Blackout
- **Action:** Semi-Auto
- **Capacity:** 30+1
- **Barrel Length:** 6.5 in
- **Receiver Material:** 7075-T6 Aluminum
- **Finish:** Midnight Bronze Cerakote

### Detailed Features
- 6.5-inch 4140CM barrel with a 1:7 twist and salt bath nitride treatment pairs with an adjustable .750 gas block for tuning reliability across different loads.
- CMMG Compact Action design houses the recoil spring in the upper receiver, removing the buffer tube for a shorter overall package.
- CMMG ZEROED linear compensator is mounted on 5/8x24 threads at the muzzle.
- Includes a Magpul 30-round PMAG loaded for .300 BLK.
- DISSENT/Mk4 7075-T6 forged receivers carry AR-pattern controls for a familiar manual of arms.

## Frequently Asked Questions

**Q: What caliber is the Dissent Mk4?**

A: The CMMG Dissent Mk4 is chambered in .300 AAC Blackout.

**Q: What is the barrel length of the Dissent Mk4?**

A: It has a 6.5-inch barrel.

**Q: How many rounds does the Dissent Mk4 hold?**

A: It has a 30+1 capacity and ships with a Magpul 30-round PMAG loaded for .300 BLK.

**Q: Who makes the Dissent Mk4?**

A: CMMG makes the Dissent Mk4.

**Q: What type of firearm is the Dissent Mk4?**

A: It is a semi-automatic AR-pattern pistol. It uses CMMG's bufferless Compact Action direct-impingement system, which moves the recoil mechanism into the upper receiver and removes the need for a buffer tube.

**Q: Where can I buy the Dissent Mk4?**

A: Compare current vendor offers on this page.

## 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*

Owners of compact AR-pattern pistols like the Dissent Mk4 in .300 Blackout tend to focus on how the bufferless design changes handling. Without a buffer tube, the platform feels shorter and better balanced one-handed, which is the main reason many shooters choose this style of gun. Feedback on CMMG's Compact Action system is generally positive, though some owners note a bufferless action needs a properly tuned gas system, which is why an adjustable gas block matters to this crowd.

Ergonomics get mixed reviews. The shorter package is easier to store and maneuver in tight spaces, but recoil impulse on a lightweight .300 Blackout pistol without a stock can feel snappier than on a full-size rifle, especially with supersonic ammunition. Shooters who add a brace or arm strap generally report better control.

On value, CMMG guns in this class are seen as a premium option. Buyers accept a higher price for the compact design and finish quality, and Midnight Bronze in particular draws compliments as a finish choice. Some owners wish threaded muzzle devices and included magazines were more standardized across CMMG's finish options.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Classicfirearms Com | $1873.36 |

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*Data from [GunsNation](https://gunsnation.com)*