CMMG Dissent MK4 .338 ARC 10.5″ 10+1 Black Cerakote

About this product

The CMMG Dissent MK4 pairs an AR-style platform with the .338 ARC cartridge to provide a compact, modular option for shooters who want large-bore performance in a portable package. It uses CMMG’s patent-pending Compact Action to house the recoil system in the upper receiver, eliminating the need for a buffer tube and improving maneuverability. The configuration includes a 10.50″ threaded barrel and a 9.60″ M-LOK handguard for accessory mounting and compact handling.

Key Specifications

• Chambered in .338 ARC for large-bore AR performance.
• Magazine capacity is 10+1 rounds in standard configuration.
• The barrel measures 10.50 inches and is threaded.
• The overall length is 18.70 inches for a compact footprint.
• Weighs 4.90 lbs for a balance of stability and portability.
• Built as a semi-automatic action for familiar AR operation.
• Equipped with a 9.60 inch M-LOK handguard for mounting accessories.
• Receiver and components feature a Cerakote (black) finish.
• Includes a polymer stock and a CMMG Zeroed grip for ergonomics.
• Ships with one magazine to get started out of the box.

The Dissent MK4 is designed for shooters who value portability, modularity, and the adaptability of the AR platform in a compact package. Its integrated Compact Action and threaded short barrel make it well suited to applications where a smaller, easier-to-handle large-bore pistol is desirable, while familiar controls and M-LOK compatibility support a range of configurations and accessories.

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