The CMMG Dissent Mk4 pistol in .300 AAC Blackout with a Tungsten Cerakote finish (brand part no. 30A0E33-TNG) 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. CMMG runs the 6.5-inch barrel through an adjustable gas block, letting shooters fine-tune the system for supersonic or subsonic .300 Blackout loads. The rear of the receiver carries a 1913 Picatinny rail end plate in place of a buffer tube, ready for the shooter to add a folding brace separately, and an ambidextrous safety runs the controls. Among AR pistols built for maximum portability, this Dissent configuration favors shooters who want the shortest possible .300 Blackout platform.

Key Specifications

• Chambered in .300 AAC Blackout, this pistol runs a 30-round capacity magazine.
• The barrel measures 6.5 inches.
• The operating system is CMMG’s Compact Action, eliminating the buffer tube entirely.
• An adjustable gas block tunes the system for supersonic or subsonic loads.
• The rear of the receiver carries a 1913 Picatinny rail end plate in place of a buffer tube.
• That end plate is ready for the shooter to add a folding brace separately.
• The safety is ambidextrous.
• The upper is optic-ready, with no fixed sights installed.
• The finish is Tungsten Cerakote.
• The pistol ships with two factory magazines.

Frequently Asked Questions

What makes the Dissent so compact? CMMG’s Compact Action houses the recoil system in the upper receiver, eliminating the buffer tube found on a conventional AR15.

Does this pistol include a brace? No, it ships with a Picatinny rail end plate, ready for the shooter to add a folding brace separately.

Can the gas system be adjusted? Yes, an adjustable gas block tunes the Dissent for supersonic or subsonic .300 Blackout loads.

Buy the CMMG Dissent Mk4 Pistol, .300 Blackout

A buffer-less Compact Action and an adjustable gas block make this Dissent one of the most portable .300 Blackout pistols available. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.