CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1
$1,992.02
The CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 offers a bufferless design with an adjustable gas block, Cerakote finish, and TriggerTech trigger for reliable cycling of both supersonic and subsonic loads in a compact, NFA-free package.
The CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 is a compact semi-automatic platform that eliminates the traditional buffer tube, making it ideal for shooters who want a short-barreled rifle-style pistol without the NFA paperwork. This design lets you run a folding brace or stock adapter directly off the 1913 Picatinny end plate, keeping the overall length short while still cycling supersonic and subsonic loads reliably.
| Manufacturer | CMMG |
|---|---|
| Model | DISSENT MK4 Pistol |
| Material | 7075-T6 Aluminum upper and lower receiver (per manufacturer specs) |
| Compatibility | .300 AAC Blackout, uses standard AR-15 magazines |
| Finish | Cerakote |
| Weight | 6.2 lbs (with empty magazine, per manufacturer specs) |
| Condition | New |
Key Features
- Bufferless Action – WHY IT MATTERS: No buffer tube means you can fold the brace or stock without affecting function, and the overall package is shorter for compact storage or vehicle carry.
- Adjustable Gas Block – WHY IT MATTERS: You can tune the gas system to run both supersonic and subsonic ammunition without swapping parts, giving you one gun that handles everything from hunting to home defense.
- 10.50″ Threaded Barrel – WHY IT MATTERS: Threaded 5/8×24 allows quick attachment of a suppressor or muzzle device, and the 10.5-inch length balances ballistic performance with maneuverability.
- TriggerTech AR-D Trigger – WHY IT MATTERS: A crisp, consistent trigger pull (reportedly 4.5 lbs) helps shooters—especially newer ones—stay on target and build accuracy confidence.
- M-LOK Handguard – WHY IT MATTERS: The 9.60″ free-float rail lets you mount lights, grips, or lasers exactly where you need them without adding bulk.
Who It’s For
This pistol is for families and beginners who want a do-it-all .300 Blackout platform that can serve as a home defense tool, a truck gun, or a training piece for youth shooters learning to handle suppressed loads. It’s also perfect for experienced shooters who want a compact AR-style pistol without the hassle of a tax stamp.
Pros and Cons
- Pros: Bufferless design, adjustable gas block, Cerakote finish, excellent trigger, compact and lightweight.
- Cons: The pistol-length gas system can be a bit finicky with very low-pressure subsonic loads until you dial in the gas block; also, the MSRP is on the higher side compared to some entry-level AR pistols.
Comparison vs. Competitors
| Feature | CMMG DISSENT MK4 | Zev Technologies OZ9C | Geissele Super Duty Pistol |
|---|---|---|---|
| Caliber | .300 AAC Blackout | 9mm | 5.56 NATO |
| Barrel Length | 10.5″ | 4.5″ | 10.3″ |
| Buffer System | Bufferless | Standard buffer | Standard buffer |
| Trigger | TriggerTech AR-D | Zev match | Geissele Super |
| Finish | Cerakote | Black nitride | Black oxide |
| Weight | 6.2 lbs | ~2.5 lbs | ~6.5 lbs |
| Price | ~$1778 | ~$1400 | ~$1600 |
FAQ
Does the CMMG DISSENT MK4 work with a suppressor?
Yes, the 10.5″ threaded barrel (5/8×24 thread pitch) is suppressor-ready. The adjustable gas block lets you tune the action for subsonic loads, which is ideal for quiet shooting.
Can I use standard AR-15 magazines with this pistol?
Yes, it takes standard AR-15 .300 AAC Blackout magazines (30-round capacity included).
Is the DISSENT MK4 legal to own without a tax stamp?
Yes, it’s sold as a pistol with a 10.5″ barrel and no stock, so it’s not an NFA item. You can add a folding brace without extra paperwork.
What type of ammunition does the gas block support?
The adjustable gas block is designed to handle both supersonic and subsonic loads. You’ll need to dial it in for your specific ammo, but it works with everything from 110-grain hunting rounds to 220-grain subsonic.
How does the bufferless system affect reliability?
Per CMMG specs, the bufferless action reduces reciprocating mass and eliminates the buffer tube, which can improve reliability with shorter barrels and suppressors. It cycles consistently across a wide range of ammunition.
Trust Block
- ✓ Nationwide delivery (all 50 states)
- ✓ Ships 1-2 business days
- ✓ 30-day returns
- ✓ Secure checkout
Last updated: April 2026
According to the NSSF, over 24 million Americans now own a modern sporting rifle or pistol, and compact .300 Blackout pistols like this one are a top choice for home defense and training. AR Pistols | .300 Blackout | Firearms
FFL Transfer & Firearms Laws for CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1
All firearms, including the CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1, 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 DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 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 DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 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 DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1?
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 DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 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 Pistols.
What tags or features does this product have?
Key features and tags for this product include: .
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.
Be the first to review “CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1”
FFL Transfer & Firearms Laws
All firearms, including the CMMG DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1, 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 DISSENT MK4 Pistol .300 AAC Blackout 10.5″ 30+1 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.
Reviews
There are no reviews yet.