CMMG Dissent Mk4 .300 Blk, 6.5" Barrel, Titanium Cerakote, 2 Stage Trigger, 30rd

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Manufacturer Number:
300 Blackout
CMMG Dissent
Unit of Measure:
The CMMG DISSENT is an AR Personal Defense Weapon like no other. Incorporating a variety of new features and technologies, each DISSENT is made to maximize portability and modularity, most notably thanks to CMMG’s patent-pending Compact Action that houses the entire recoil system in the upper receiver, eliminating the need for the buffer tube altogether.

Chambered in 300 BLK, this DISSENT packs .30 cal power in an ultra-compact package that offers AR15 ambi controls and our forward non-reciprocating side charger that can be switched for left or right-handed operation. At the rear of the lower receiver is a 1913 picatinny rail section for attaching the brace or stock* that fits you best.

Each DISSENT is available in a variety of custom Cerakote finishes to match your style.
Platform: Mk4
Caliber: .300 Blk
Operating System: Compact Action-Direct Impingement
Barrel Length: 6.5
Barrel Twist: 1:7
Barrel Contour: Mt
Barrel Material: 4140Cm, Sbn
Barrel Twist: 1:7
Muzzle Device: Cmmg Zeroed Linear Compensator
Muzzle Thread: 5/8 X 24
Gas Port Location: Pistol
Gas Block: Adjustable .750"
Upper Receiver: Dissent 7075 T6 Aluminum
Lower Receiver: Mk4 Forged 7075 T6 Aluminum
Hand Guard: Cmmg 5.5" Proprietary
Finish: Cerakote
Charging Handle: Dissent Side Charger - Left
Pistol Grip: Cmmg Zeroed Pistol Grip
Buffer Type: N/A
Receiver Extension: 1913 Picatinny Rail End Cap
Trigger Type: Triggertech Ar-D 2-Stage
Trigger Guard: Cmmg Zeroed Trigger Guard
Safety Selector: Cmmg Zeroed 60/90 Degree
Magazine Magpul: 300Blk 30Rd Pmag
Weight: 4.8 Lbs
Length: 14.7"
This purchase comes with the Impact Guns Lifetime Warranty  (Read More)

Estimated shipping times are posted on the product information page under the title "Ships On Or Before:" please note that all lead-times are estimates.  For items in our warehouse, we usually ship within 3 business days.  For items only available at distribution or other sources, the ship time may be up to 10 business days.  For items only available at the manufacturer, the lead-time may be a few weeks or longer-- depending on availability.

Please also note that some items are unique, hard to obtain, or one-of-a-kind, so Impact reserves the right to cancel your order should an item not be available to ship.

We will not charge your credit card until your product ships, except for certain special orders.

We normally will ship FedEx and US POSTAL. If you need faster shipment, we can ship 2nd Day or Next Day for an extra charge.

Alaska and Hawaii residents - your order MUST ship 2nd day or faster. Most orders over $100 value will ship with a signature-required to ensure they make it to you. Products that have free shipping only applies to the lower 48 states.

NOTE: We make every effort to get your order shipped as fast as possible. In some circumstances, especially during sales and after weekends, we may not get your order shipped in the time specified. Please rest assured that we will ship your item as soon as we can.

We want you to be 100% satisfied with your purchase from Impact Guns, therefore we offer no hassle returns.

How do I start the return process?

  • Log in to your account and locate and click on the "Request Return" link.
  • An Impact Guns agent will review your request for a return and respond within two business days.
  • All returns are subject to inspection and approval prior to refund being issued.
  • All products need to be in new and original manufacturer condition.
  • As an alternate method, you can send an email to Please be sure to include your original order number and relevant contact information.

When will I get my credit or return?

  • Most returns are fully refunded in 3-5 days after we receive and process the return. It may take longer for the credit to appear in your account depending on your bank. Most items that are in stock ship within 3-5 days after receipt of your returned item but may take longer depending on availability.
  • Returns must be charged back to the original credit card used in the purchase.  If this is not possible, we will refund you via check.

What about damaged/incorrect items?

  • If you received a damaged, defective, or incorrect item, Impact Guns will ship you a replacement of the exact item upon receipt of the damaged or defective item. Impact Guns will send you a return shipping label for the return.

What about return shipping costs?

  • If an Impact Guns error causes the need to return an item or we are replacing a returned defective or incorrect item, then we will pay the associated shipping costs.
  • Otherwise, the customer is responsible for any return shipping costs. When returning an item, please add package tracking and adequate insurance.
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