The larger, more powerful sibling to the .300 AAC Blackout, the 8.6 Blackout takes everything shooters love about its .30 Cal predecessor and scales it up for even more capability. Built on the AR-10-sized DISSENT Mk3 platform, this powerhouse is optimized for short barrels thanks to its aggressive 1:3 twist rate, delivering exceptional performance whether you're running supersonic or subsonic loads. The added heft of the .338 Cal projectiles gives 8.6 Blackout serious punch downrange, while maintaining outstanding suppression, rivaling the whisper-quiet reputation of .300 AAC Blackout. Offered in seven custom Cerakote finishes, the DISSENT Mk3 pistol can be configured as a bare pistol with a 1913 Picatinny rear plate, ready for your choice of braces, stocks or slings, choose the version equipped with an SB Tactical FS1913A aluminum folding brace for added stability right out of the box. Whether for hunting, defense or just embracing the cutting-edge of modern calibers, the 8.6 Blackout DISSENT Mk3 brings next-level performance to a platform built to handle it all.

The adjustable gas block allows you to fine-tune your rifle's gas system for optimal performance across different ammunition types and shooting conditions
Whether you're shooting suppressed or simply tailoring the rifle to your preferred ammo, the adjustable gas block gives you total control over the gas flow
Every CMMG product is covered by our lifetime quality huarantee, a testament to our unwavering commitment to quality and craftsmanship
Every CMMG product is backed by our lifetime quality huarantee, ensuring protection against material or workmanship defects, because we aim to please and stand behind every firearm we make

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It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).