CMMG Dissent Mk4 Pistol, .300 Blackout, 6.5-Inch, Midnight Bronze

The CMMG Dissent Mk4 (CMMG part no. 30A0E33-MB) is an AR personal-defense weapon built around CMMG’s patent-pending Compact Action, which houses the entire recoil system in the upper receiver and eliminates the buffer tube altogether. Chambered in .300 Blackout, this 6.5-inch-barreled Dissent packs .30-caliber power into an ultra-compact package with AR15 ambidextrous controls and a forward non-reciprocating side charger switchable for left- or right-handed operation. A 1913 Picatinny rail section at the rear accepts the brace that fits your build. Finished in CMMG‘s midnight bronze Cerakote, this Dissent ships with two magazines so you’re ready to run it hard from the first range trip.

Key Specifications

• Chambered in .300 AAC Blackout, packing full .30-caliber power into a compact case.
• Holds 30 rounds per magazine, and ships with 2 magazines included.
• Runs a 6.5-inch barrel for an ultra-compact overall package.
• Built around CMMG’s patent-pending Compact Action, which eliminates the buffer tube entirely.
• Operated through a forward non-reciprocating side charger, switchable for left- or right-handed operation.
• Overall length measures 39.6 inches with the brace extended.
• Features an ambidextrous safety selector for fast manipulation from either side.
• Ships optics-ready with no fixed sights, leaving the top rail open for a red dot.
• Cycles in reliable semi-auto for controlled, repeatable follow-up shots.
• Finished in midnight bronze Cerakote for a distinctive, durable look.

Frequently Asked Questions

How many magazines are included? Two magazines ship with the pistol.

Does the Dissent have a buffer tube? No, its Compact Action houses the recoil system in the upper receiver, eliminating the buffer tube.

Can the charging handle be switched for left-hand use? Yes, the forward non-reciprocating side charger can be configured for left- or right-handed operation.

Buy the CMMG Dissent Mk4 Pistol, .300 Blackout, 6.5-Inch, Midnight Bronze

This bronze Dissent packs genuine .300 Blackout power into one of the most compact, buffer-tube-free PDW platforms CMMG builds. Order it from our AR pistols lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL.