CMMG 30BC239AB Dissent MK4 300 Blackout 10.50, Left Side Charging Handle, Armor Black, Zeroed Linear Comp, 9.60 M-LOK Handguard, Pic End Plate, Fits AR-Platform, Upper Receiver

Overview

The CMMG Dissent MK4 upper receiver is engineered to provide a compact, streamlined solution for AR-platform builds in .300 AAC Blackout. Utilizing CMMG's patent-pending Compact Action and Radial Delayed Blowback technology with a fixed ejector, the entire action and recoil assembly is housed within the upper receiver, eliminating the need for a traditional lower receiver buffer tube and reducing overall bulk. This 10.50-inch barrel configuration features an Armor Black Cerakote finish on the aluminum receiver, a 1:10" twist rate, and a 5/8"x24 threaded muzzle outfitted with a Zeroed Linear Compensator. Operation is facilitated by a forward non-reciprocating left-side charging handle that allows for quick bolt manipulation without leaving the target. Additional components include a 9.60-inch M-LOK handguard and a 1913 Picatinny rail end plate.

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