The CMMG Dissent BR4 9mm 16.10″ Threaded Barrel is a pistol-caliber carbine that brings proven radial delayed blowback technology to a familiar rifle platform. Built for range days, training sessions, and practical shooting, this 9mm AR offers soft recoil and reliable feeding with STANAG-pattern magazines. The 16.10-inch Black Nitride barrel and Coyote Tan Cerakote receiver make it a durable, ready-to-run choice for shooters who want a soft-shooting, low-recoil carbine.
| Manufacturer | CMMG (per manufacturer specs) |
|---|---|
| Model | Dissent BR4 |
| Material | Aluminum receiver (Cerakote), steel barrel (Black Nitride) |
| Compatibility | 9mm conversion magazines, STANAG-pattern magazines with matching Mk4 DISSENT upper groups |
| Finish | Coyote Tan Cerakote receiver, Black Nitride barrel |
| Weight | Approximately 6.8 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Radial Delayed Blowback System — Why it matters: Reduces felt recoil and muzzle rise, making follow-up shots faster and more accurate, especially for newer shooters.
- 16.10″ Black Nitride Threaded Barrel — Why it matters: The threaded barrel allows you to attach a suppressor or muzzle brake easily, while the Black Nitride finish resists wear and corrosion for long service life.
- Magpul SGA Black Polymer Stock — Why it matters: Provides a comfortable, adjustable cheek weld and length of pull, helping shooters of all sizes get a proper fit.
- Coyote Tan Cerakote Aluminum Receiver — Why it matters: The Cerakote finish adds a layer of protection against scratches and weather, while the lightweight aluminum keeps the carbine easy to carry.
- STANAG Magazine Compatibility — Why it matters: Accepts common 9mm magazines, so you can use the same mags across multiple guns or borrow from a friend at the range.
Who It’s For
This carbine is a solid pick for families who want a low-recoil training rifle, youth shooters moving up from a .22, or beginners looking to build confidence with a pistol-caliber carbine. It also works well for home defense practice and casual plinking.
Pros & Cons
- Pro: Soft recoil thanks to the radial delayed blowback design — easy on the shoulder and keeps sights on target.
- Pro: Threaded barrel gives you flexibility for suppressors or brakes.
- Con: The price point ($1,854.21) is higher than some entry-level 9mm carbines, but the build quality and technology justify the cost for serious shooters.
- Con: The Cerakote finish, while durable, may show wear at contact points over time.
Comparison with Competitors
| Feature | CMMG Dissent BR4 | Zev Technologies OZ9 Carbine | Geissele Super Duty 9mm |
|---|---|---|---|
| Action | Radial Delayed Blowback | Blowback | Blowback |
| Barrel Length | 16.10″ | 16″ | 16″ |
| Weight | ~6.8 lbs | ~7.2 lbs | ~6.9 lbs |
| Finish | Coyote Tan Cerakote | Black Anodized | Black Anodized |
| Price | $1,854.21 | $1,999+ | $1,899+ |
| Magazine Compatibility | STANAG 9mm | Glock mags | Glock mags |
FAQ
What magazines does the CMMG Dissent BR4 accept?
It accepts 9mm conversion magazines designed for the Mk4 DISSENT platform, as well as other STANAG-pattern 9mm magazines when used with the matching upper group.
Is the barrel threaded for a suppressor?
Yes, the 16.10″ barrel is threaded (standard 1/2×28) and includes a CMMG Zeroed muzzle brake. You can remove the brake and attach a suppressor or other muzzle device.
How does the radial delayed blowback system feel compared to a standard blowback?
It significantly reduces felt recoil and muzzle rise, giving you a softer, more controllable shooting experience. It’s a big help for newer shooters or anyone sensitive to recoil.
Is this carbine suitable for home defense?
Yes, the 9mm round is effective for home defense, and the low recoil makes it easy to handle. The 16.10″ barrel keeps velocity up while staying maneuverable.
Does the stock adjust for length of pull?
Yes, the Magpul SGA stock offers adjustable length of pull and cheek riser height, so you can customize the fit for different shooters.
Ready to Order
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Last updated: April 2026
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This CMMG Dissent BR4 9mm 16.10″ Threaded Barrel is ideal for shooters looking to buy guns online with confidence. Built with precision engineering and tested performance, it’s a top-tier choice whether you're looking for home defense, sport shooting, or a trusted everyday carry.
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