CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock
$2,152.81
The CMMG 55A830B-AB DISSENT BR4 5.556 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel delivers a reliable, fixed-magazine rifle for ranchers and rural workers in compliance states. Black Armor Cerakote receiver, 13.50″ M-LOK handguard, and Magpul SGA stock keep it tough and legal.
If you’re running a ranch or working rural ground, you need a rifle that pulls its weight without a bunch of fuss. The CMMG 55A830B-AB DISSENT BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock is built for folks who live under state regs that don’t make sense—and who still need a dependable tool that runs hard. This is a complete, fixed-magazine rifle with an unthreaded barrel and recessed crown, purpose-built for compliance without cutting corners on reliability.
| Manufacturer | CMMG |
|---|---|
| Model | 55A830B-AB DISSENT BR4 |
| Material | Aluminum receiver, black Armor Cerakote finish; black nitride medium taper barrel; black polymer stock |
| Compatibility | Accepts standard 5.56 NATO AR-15 magazines (10-round capacity per state regs) |
| Finish | Black Armor Cerakote on receiver; black nitride on barrel |
| Weight | Approx. 6.9 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Unthreaded EMPIRE Barrel Profile – Why it matters: No threading means no muzzle device, keeping you legal in states that ban threaded barrels. The recessed crown protects the rifling and keeps accuracy consistent shot after shot.
- Black Nitride Medium Taper Barrel – Why it matters: Nitride treatment hardens the bore and resists corrosion, so this barrel holds up to wet weather, mud, and hard use without losing zero.
- 13.50″ M-LOK Handguard – Why it matters: You can mount lights, lasers, or a bipod exactly where you need them without adding weight. The slim profile feels natural in the hand, even with gloves on.
- Magpul SGA Black Polymer Stock – Why it matters: This stock adjusts for length of pull and comb height, so you get a solid cheek weld whether you’re wearing a heavy coat or shooting in a T-shirt. It’s tough as nails and doesn’t rattle.
- Black Armor Cerakote on Receiver – Why it matters: Cerakote resists scratches, solvents, and rust. After a season of bouncing around in a truck rack or leaning against a fence post, this rifle still looks like it means business.
Who It’s For
This rifle is built for ranchers, farmers, and rural workers who live in states with magazine capacity limits or barrel threading bans. It’s also for anyone who wants a no-nonsense 5.56 that runs on standard AR mags but sidesteps the headache of feature restrictions. If you need a tool that works when you need it—and stays out of legal trouble—this is your rig.
Pros & Cons
- Pro: Reliable fixed-magazine design that feeds standard 5.56 NATO ammo without hiccups.
- Pro: Lightweight at roughly 6.9 lbs, easy to carry all day.
- Pro: Uses common AR-15 mags, so you’re not stuck with proprietary junk.
- Con: The unthreaded barrel means you can’t add a suppressor or muzzle brake later—you’re stuck with the factory crown. If you ever move to a free state, you’ll need a new barrel or a gunsmith to thread it.
Comparison
| Feature | CMMG DISSENT BR4 | Geissele Super Duty 16″ | Zev Technologies OZ9C |
|---|---|---|---|
| Caliber | 5.56 NATO | 5.56 NATO | 9mm (pistol) |
| Barrel Thread | Unthreaded (compliant) | Threaded 1/2×28 | Threaded 1/2×28 |
| Magazine | Fixed 10-round | Standard 30-round | Standard 17-round |
| Stock | Magpul SGA (adjustable) | Geissele Super 42 buffer | Zev grip module |
| Weight | ~6.9 lbs | ~7.1 lbs | ~2.2 lbs |
| Price | $1,922.15 | ~$1,800 | ~$1,600 |
| Best For | Compliance states, ranch work | General purpose, free states | Concealed carry, competition |
The Geissele is a top-tier general-purpose AR, but its threaded barrel and standard mag won’t fly in restricted states. The Zev is a pistol, not a rifle—apples to oranges. The CMMG DISSENT BR4 fills a specific gap: a reliable 5.56 that’s legal where others aren’t.
FAQ
Does this rifle accept standard AR-15 magazines?
Yes, it uses standard 5.56 NATO AR-15 magazines. It ships with a 10-round magazine to comply with state capacity limits, but it will accept any standard AR mag if you’re in a free state.
Is the barrel threaded?
No. The barrel is unthreaded with an EMPIRE profile and recessed crown. This is specifically designed to comply with states that ban threaded barrels on semi-automatic rifles.
Can I change the stock or add a suppressor later?
You can swap the Magpul SGA stock for any compatible AR stock. Adding a suppressor would require either a new threaded barrel or a gunsmith to thread the existing one—neither is a quick job. This rifle is built for compliance, not modularity.
What’s the warranty on this rifle?
CMMG backs their firearms with a limited lifetime warranty against defects in materials and workmanship. Per CMMG’s official policy, you register the warranty within 30 days of purchase.
Why Buy From Us
- ✅ Nationwide delivery to all 50 states
- ✅ Ships within 1-2 business days
- ✅ 30-day return policy
- ✅ Secure checkout
Last updated: April 2026
According to a 2025 market report, over 40% of AR-15 buyers now live in states with magazine capacity restrictions, making compliant rifles like this one a growing segment. This CMMG DISSENT BR4 gives you a tool that works—no lawyer required.
Browse more: AR Rifles | Compliant Firearms | 5.56 Rifles
FFL Transfer & Firearms Laws for CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock
All firearms, including the CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: AR Rifles.
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Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
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FFL Transfer & Firearms Laws
All firearms, including the CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock, must be shipped to a licensed Federal Firearms License (FFL) dealer. A background check and any required local paperwork must be completed before you can take possession.
How It Works
- Place your order online.
- Send us your preferred local FFL dealer info.
- We ship the firearm to your FFL after verification.
- Complete background check and pick up from your dealer.
Legal Compliance
We comply with all U.S. firearm laws. It is your responsibility to ensure the CMMG 55A830B-AB Dissent BR4 5.56 NATO 10+1 16.10″ Black Nitride Medium Taper Barrel, Black Armor Cerakote Picatinny Rail Aluminum Receiver, 13.50″ M-LOK Handguard, Magpul SGA Black Polymer Stock is legal in your state. Some states (e.g. CA, NY, NJ) have restrictions on magazine size or certain features.
Helpful Links
Need help? Contact our team — we’ll guide you through selecting a compliant firearm and the FFL transfer process.
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