CMMG Dissent MK4 300 BLK 16.1" AR Pistol - Armored Black
$1,971.19
$2,099.95
(You save
$128.76
)
- Capacity-Rounds:
- 30
- Caliber-Gauge:
- 300 AAC Blackout/Whisper
- Barrel Length:
- 16.1"
- Barrel Length Range:
- 16" to 16.99"
- OAL:
- 27.60"-37"
- Trigger:
- Zeroed Drop-In Single Stage
- Weight:
- 6.40 lbs
- Muzzle:
- CMMG Zeroed Muzzle Brake
- Receiver Material:
- Aluminum
- Safety:
- CMMG Zeroed 60/90 Degree
- Twist:
- 1:7"
- Stock Description:
- CMMG Dissent Side Folding Stock
- Weight Range:
- 7 lbs to 7.99 lbs
- Barrel Description:
- Steel Threaded
The CMMG Dissent MK4 300 BLK 16.1" AR pistol is a purpose-built platform for shooters who want real versatility in a compact, maneuverable package. Three hundred Blackout's reputation for working equally well with subsonic and supersonic ammunition makes it ideal for suppressed shooting, close-range hunting, and target work—and this Dissent leverages that flexibility with a thoughtfully engineered gas system and shooter-friendly controls. At 6.4 pounds and collapsing to just 25.9 inches folded, it's a genuine backpack gun or truck gun that doesn't compromise on ergonomics or tuning potential.
Built on CMMG's Mk4 platform with 7075 T6 aluminum upper and lower receivers, the Dissent MK4 pairs a cold-hammer-forged 4140CM barrel with an adjustable gas block—the real differentiator here. That adjustable gas block lets you dial in your system to run cleanly with whatever ammunition you prefer, whether you're running heavy, subsonic rounds through a suppressor or faster supersonic loads at the range. The 16.1" barrel provides the velocity and dwell time that makes 300 BLK shine without sacrificing the compact handling you're after.
The ergonomic package reflects genuine field thinking. The Dissent side-folding stock offers adjustable length of pull and a cheek riser for shooting comfort, while the non-reciprocating side charging handle keeps you on target and off the magazine well. The proprietary M-LOK handguard includes a top Picatinny rail, giving you mounting real estate for optics, lights, or thermal without hunting for adapters. Two Magpul 30-round magazines come included, and the CMMG ZEROED trigger, safety, and pistol grip round out a cohesive, reliable build.
If you're looking for a 300 Blackout AR that's equally at home on a hunting pack, in a vehicle, or on the bench, the Dissent's compact footprint, tunable gas system, and folding ergonomics make it a serious contender.
Key Features
- Adjustable gas block tuned for subsonic and supersonic 300 BLK ammunition
- Side-folding stock with adjustable length of pull and cheek riser
- Non-reciprocating side charging handle for improved target control
- M-LOK handguard with integrated top Picatinny rail
- Cold-hammer-forged 4140CM barrel, 1:7 twist
- Compact 25.9" collapsed length, 6.4 lbs total weight
- Two Magpul 300 BLK 30-round magazines included
- CMMG ZEROED trigger, pistol grip, and trigger guard
- CMMG ZEROED muzzle brake, 5/8x24 thread
Specifications
| Brand | CMMG |
| Model | Dissent MK4 |
| Caliber | .300 BLK |
| Barrel Length | 16.1" |
| Barrel Twist | 1:7 |
| Barrel Material | 4140CM SBN |
| Barrel Contour | MT |
| Upper Receiver | DISSENT 7075 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Operating System | Compact Action-Direct Impingement |
| Gas Block | Adjustable 0.750" |
| Gas Port Location | Carbine |
| Handguard | CMMG 15" Proprietary M-LOK |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 5/8 x 24 |
| Charging Handle | Dissent Side Charger (Reversible) |
| Stock/Brace | DISSENT Side Folding Stock, Adjustable LOP & Cheek Riser |
| Receiver Extension | DISSENT Folding Stock Adapter |
| Trigger | CMMG ZEROED Drop-In |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Pistol Grip | CMMG ZEROED |
| Trigger Guard | CMMG ZEROED |
| Magazines Included | 2x Magpul 300 BLK 30rd PMAG |
| Weight | 6.4 lbs |
| Length (Extended) | 35.5" |
| Length (Folded) | 25.9" |
| Finish | Cerakote (Armored Black) |
Frequently Asked Questions
Can I tune the gas system for suppressed shooting?
Yes. The adjustable gas block lets you dial the system in for both suppressed subsonic ammunition and unsuppressed supersonic loads, which is one of the Dissent's real strengths with 300 Blackout.
What magazines does this Dissent use?
It accepts standard 300 BLK magazines. Two Magpul 300 BLK 30-round PMAGs are included with the rifle.
Does the stock fold for storage or transport?
Yes. The Dissent side-folding stock collapses the rifle to 25.9 inches, making it ideal for vehicle storage, backpack carry, or tight spaces. The stock also features adjustable length of pull and a cheek riser for shooter comfort when deployed.
Is this a left- or right-handed platform?
The side charging handle is reversible, allowing it to be configured for either hand preference.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
- Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
- The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
- The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
- Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
- Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
- Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.
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