The CMMG Dissent Mk4 in 6.5 Grendel is a short-barreled rifle platform built on proven AR15 ergonomics and chambered for a cartridge that delivers rifle-grade ballistics in a compact, maneuverable package. At 16.1 inches with a direct impingement system and 1:8 twist barrel, this 6.5 Grendel pistol gives hunters and shooters a legitimate medium-range tool without the bulk or recoil of a full-size rifle—making it ideal for brush country, tactical training, or precision shooting at intermediate distances where .308 performance matters but a dedicated rifle feels like overkill.

Built around CMMG's Mk4 forged 7075-T6 aluminum receivers and dressed in Armor Black Cerakote, the Dissent Mk4 combines rugged construction with modularity. The reversible Dissent side charger keeps your thumb in control and out of optic shadow, while the adjustable gas block (0.750") lets you fine-tune cycling with your specific ammunition and setup. A CMMG ZEROED muzzle brake (5/8 x 24 threads) helps manage recoil and sight picture, and the 15-inch proprietary handguard provides real estate for mounting optics, lights, or other accessories without excess weight. The pistol arrives with a ZEROED drop-in trigger, 60/90-degree safety selector, and a set of CMMG ZEROED controls that feel at home to anyone familiar with the AR platform.

The rear receiver sports a 1913 Picatinny rail end cap, opening the door to folding stocks, sling mounts, and braces depending on your build intent. Two 10-round magazines are included. At 6.4 pounds and 26.3 inches overall length, the Dissent Mk4 strikes a balance between practical handling and shooting stability—compact enough to navigate tight spaces, substantial enough to hold zero and deliver consistent hits. If you're looking for a 6.5 Grendel platform that doesn't require mastering a whole new manual of arms, the CMMG Dissent Mk4 speaks the language of AR shooters while opening up a cartridge known for efficiency and range.

The CMMG Dissent Mk4 in 6.5 Grendel is a short-barreled rifle platform built on proven AR15 ergonomics and chambered for a cartridge that delivers rifle-grade ballistics in a compact, maneuverable package. At 16.1 inches with a direct impingement system and 1:8 twist barrel, this 6.5 Grendel pistol gives hunters and shooters a legitimate medium-range tool without the bulk or recoil of a full-size rifle—making it ideal for brush country, tactical training, or precision shooting at intermediate distances where .308 performance matters but a dedicated rifle feels like overkill.

Built around CMMG's Mk4 forged 7075-T6 aluminum receivers and dressed in Armor Black Cerakote, the Dissent Mk4 combines rugged construction with modularity. The reversible Dissent side charger keeps your thumb in control and out of optic shadow, while the adjustable gas block (0.750") lets you fine-tune cycling with your specific ammunition and setup. A CMMG ZEROED muzzle brake (5/8 x 24 threads) helps manage recoil and sight picture, and the 15-inch proprietary handguard provides real estate for mounting optics, lights, or other accessories without excess weight. The pistol arrives with a ZEROED drop-in trigger, 60/90-degree safety selector, and a set of CMMG ZEROED controls that feel at home to anyone familiar with the AR platform.

The rear receiver sports a 1913 Picatinny rail end cap, opening the door to folding stocks, sling mounts, and braces depending on your build intent. Two 10-round magazines are included. At 6.4 pounds and 26.3 inches overall length, the Dissent Mk4 strikes a balance between practical handling and shooting stability—compact enough to navigate tight spaces, substantial enough to hold zero and deliver consistent hits. If you're looking for a 6.5 Grendel platform that doesn't require mastering a whole new manual of arms, the CMMG Dissent Mk4 speaks the language of AR shooters while opening up a cartridge known for efficiency and range.