The CMMG Dissent Mk4 in 6mm ARC (brand part no. 60AA90CAB) is a semi-auto compact-action direct-impingement carbine built around a 16.1-inch, 416 stainless steel barrel, finished in Armor Black Cerakote. CMMG delivers 6mm ARC’s flat-shooting, long-range performance in an AR15-compatible platform without the added weight of a full-size AR-10. The rear of the rifle features the DISSENT side-folding stock with an adjustable length of pull and adjustable cheek riser, and a forward, non-reciprocating charging handle allows quick manipulation without coming off target. The M-LOK handguard includes a top Picatinny rail for mounting accessories. Among long-range AR-platform carbines in the AR rifles category, the Dissent Mk4 favors shooters who want .308-class ballistics without AR-10 bulk.

Key Specifications

• Chambered in 6mm ARC.
• Barrel has a 1:7.5-inch rate of twist.
• Built on CMMG’s compact-action, direct-impingement Mk4 platform.
• Features a 16.1-inch, 416 stainless steel barrel.
• Muzzle is threaded 5/8×24 with a CMMG Zeroed muzzle brake.
• Gas block is adjustable, 0.750-inch.
• Charging handle is a reversible Dissent side-charger.
• Stock is a side-folding design with an adjustable length of pull and cheek riser.
• Safety selector is CMMG Zeroed 60/90-degree.
• Feeds from two included 10-round CMMG magazines.
• Weighs approximately 6.7 pounds.

Frequently Asked Questions

Why choose 6mm ARC? It delivers long-range performance similar to .243 or .308 Win without the weight of a full-size AR-10.

Does the stock fold? Yes, the DISSENT side-folding stock adjusts for length of pull and cheek height.

How does the side-charging handle work? It is a forward, non-reciprocating, reversible charging handle for quick manipulation without coming off target.

Buy the CMMG Dissent Mk4 6mm ARC

Long-range .308-class ballistics without AR-10 bulk are exactly what the Dissent Mk4 delivers. As soon as it’s ready to ship, order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.