CMMG Dissent MK4 .300 Blackout AR Pistol, 6.5-Inch

Description

Built around CMMG’s Compact Action system, the Dissent MK4 is an AR pistol chambered in .300 AAC Blackout. Its compact receiver layout houses the recoil system in the upper receiver and uses a 1913 Picatinny rail end cap in place of a buffer tube. We point this configuration toward shooters who want a compact, modular platform for range use and storage.

Key Specifications

• The pistol is chambered in .300 AAC Blackout for compatibility with that centerfire cartridge.
• The barrel measures 6.5 inches for the compact configuration specified by CMMG.
• The action operates as semi-automatic for a familiar AR-style manual of arms.
• The operating system uses Compact Action with direct impingement, placing the recoil system inside the upper receiver.
• The upper and lower receivers are made from 7075-T6 aluminum.
• The handguard measures 5.5 inches and uses M-LOK (Modular Lock accessory mounting) slots.
• The muzzle uses 5/8 x 24-inch threads and is fitted with a CMMG ZEROED linear muzzle device.
• The exterior is finished in Coyote Tan Cerakote, a ceramic-based firearm coating.
• The magazine system is listed at 30+1 capacity.
• The rear of the lower receiver uses a 1913 Picatinny rail end cap for the specified receiver extension arrangement.

The Dissent’s bufferless layout keeps the rear of the receiver compact while retaining AR-style controls and a forward side charger that can be switched for left- or right-handed operation. The forged 7075-T6 lower receiver, adjustable gas block, and 5.5-inch M-LOK handguard provide concrete mounting and configuration details without adding unnecessary bulk. The Coyote Tan Cerakote finish gives the pistol its distinct appearance. This CMMG Dissent MK4 is a compact .300 AAC Blackout AR pistol.