# CMMG Dissent MK3 .308 Win 12.5in Armor Black

**Brand:** CMMG
**Category:** AR Style Rifles
**Caliber:** .308 Win

## Specifications

- **Caliber:** .308 Win
- **Barrel Length:** 12.5"
- **UPC:** 810148629731
- **SKU:** UCEGJR5Sl

## Description

The CMMG Dissent MK3 is an AR-pattern semi-automatic rifle chambered in .308 Win with a 12.5-inch barrel and a 20-round capacity. It ships in an Armor Black finish and is configured with a pistol brace. The 12.5-inch barrel is a short-barreled configuration; transfer requires additional federal paperwork.

### Key Specifications
- **Brand**: CMMG
- **Model**: Dissent MK3
- **Caliber**: .308 Win
- **Action**: Semi Auto
- **Capacity**: 20 rounds
- **Barrel Length**: 12.5 inches
- **Color/Finish**: Armor Black

### Detailed Features
- AR-pattern platform in .308 Win
- 12.5-inch barrel in a braced configuration
- 20-round capacity
- Armor Black finish
- Short-barreled configuration requiring additional federal transfer paperwork

## Frequently Asked Questions

**Q: What caliber is the Dissent MK3?**

A: The CMMG Dissent MK3 is chambered in .308 Win.

**Q: Who makes the Dissent MK3?**

A: The Dissent MK3 is made by CMMG.

**Q: What type of firearm is the Dissent MK3?**

A: It is an AR-pattern semi-automatic rifle in the AR Style Rifles category, configured with a pistol brace.

**Q: What is the barrel length of the Dissent MK3?**

A: The Dissent MK3 has a 12.5-inch barrel.

**Q: How many rounds does the Dissent MK3 hold?**

A: It ships with a 20-round capacity.

**Q: What finish does the Dissent MK3 come in?**

A: This configuration ships in an Armor Black finish.

**Q: Where can I buy the Dissent MK3?**

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.*

> When you shoot this thing especially in the thumper 86 which we have here it is so pleasant.
>
> — [Military Arms Channel](https://www.youtube.com/watch?v=4l4Ht5cZu64&t=861s)

> I hate these magazines because in my experience they're not perfectly reliable.
>
> — [Military Arms Channel](https://www.youtube.com/watch?v=4l4Ht5cZu64&t=179s)

> The Daniel Defense is accurate it's reliable just extremely wellmade.
>
> — [Military Arms Channel](https://www.youtube.com/watch?v=4l4Ht5cZu64&t=739s)

> When you have less Mass moving around inside of the receiver you have less disruption to your site picture while you're shooting.
>
> — [Military Arms Channel](https://www.youtube.com/watch?v=4l4Ht5cZu64&t=815s)

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the CMMG Dissent MK3 in .308 Win appreciate the platform's compactness relative to a full-length .308 AR. The 12.5-inch barrel makes the package noticeably shorter than standard carbine-length builds, which is the primary draw for those who want a maneuverable large-caliber platform.

The MK3 designation and .308 Win chambering mean this is a heavier, heftier build than .223 AR patterns, and some owners note that recoil management at this barrel length requires attention to muzzle device selection. CMMG's build quality generally receives positive marks, and the Dissent series has a reputation for fit and finish above the budget AR tier.

The Armor Black finish is a practical choice that wears well in field conditions. The main point of debate among owners is the trade-off: the short barrel sacrifices velocity compared to a longer .308 platform, and those who prioritize ballistic performance at distance tend to prefer a full-length barrel. For close-range and intermediate work, the Dissent MK3 has a clear niche.

## Pricing

**3 offers available**

| Vendor | Price |
|--------|-------|
| Classicfirearms Com | $1996.70 |
| Kygunco Com | $2035.41 |
| Buds Gun Shop | $2036.49 |

## Similar Products

- [CMMG Banshee MK3 .308 Win 12.5in Armor Black](https://gunsnation.com/p/cmmg-banshee-mk3-308-win-12-5in-armor-black/UCEGJR3t8)
- [CMMG Dissent MK3 .308 Win 16.1in Armor Black](https://gunsnation.com/p/cmmg-dissent-mk3-308-win-16-1in-armor-black/UCEGJR4wD)
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- [CMMG Banshee MK3 .308 Win 12.5in](https://gunsnation.com/p/cmmg-banshee-mk3-308-win-12-5in/UCEGCVSYz)
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*Data from [GunsNation](https://gunsnation.com)*