CMMG DISSENT Mk3 8.6 BLK Pistol 12.5″ Black

About this product

The CMMG DISSENT Mk3 is an AR10-sized pistol built around the 8.6 BLK chambering with a 12.5-inch barrel. It employs a compact direct-impingement operating system and a fast 1:3 barrel twist designed for strong short-barrel performance. The platform pairs 7075-T6 aluminum receivers with a 4140CM black nitride barrel and an 11-inch proprietary handguard for accessory compatibility. Controls and ergonomics use CMMG Zeroed components for consistent function and handling.

Key Specifications

• Chambered in 8.6 BLK for AR10-sized DISSENT Mk3 builds.
• The barrel measures 12.5 inches for compact handling.
• The barrel twist is 1:3 to suit the 8.6 BLK platform.
• Barrel material and finish are 4140CM with black nitride.
• The muzzle is threaded 5/8 x 24 and fitted with a CMMG ZEROED linear compensator.
• Handguard is a 11-inch proprietary CMMG design for accessory mounting.
• Upper and lower receivers are 7075-T6 aluminum.
• Overall length is 23 inches in the described configuration.
• Weight is approximately 7.3 lbs.
• Trigger is a Zeroed single-stage drop-in unit with CMMG Zeroed controls.

Purpose-built for shooters who value short-barrel performance and solid component engineering, the DISSENT Mk3 delivers a robust AR10-style platform in a compact package. Its combination of hardened barrel steel, fast twist rate, and 7075-T6 receivers provides a capable foundation for suppressed-capable or controlled short-barrel applications while maintaining familiar AR ergonomics and controls.

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