CMMG

The 5.7x28mm personal defense cartridge has found home with the purposefully designed 6.5 DISSENT® upper group. This DISSENT upper group comes complete with BCG lower receiver 1913 picatinny rail end plate.. All you need is a Mk4/mil-spec AR15 lower receiver or CMMG® Mk57 lower receiver. – It’s no secret that pistol stabilizing braces have been a target for scrutiny over the years and those that enjoy building their own AR pistols have wondered what will come out of all the uncertainty. DISSENT is our answer. Utilizing our patent pending Compact Action and Radial Delayed Blowback technology DISSENT upper groups house the entire action and recoil assembly in the upper receiver resulting in less bulk and length than traditional AR pistols. The forward non-reciprocating side charger allows for quick bolt operation without coming off target. – DISSENT Upper groups include a 1913 Picatinny rail end plate to use in place of the lower receiver buffer tube. – Caliber 5.7x28mm – Operating System Compact Action-Radial Delayed Blowback – Barrel Length 6.5 – Barrel Twist 1:9 – Barrel Contour MT – Barrel Material 4140CM SBN – Barrel Twist 1:9 – Muzzle Device CMMG ZEROED Linear Compensator – Muzzle Thread 1/2 x 28 – Upper Receiver DISSENT 7075 T6 Aluminum – Hand Guard CMMG 5.5 Proprietary – Finish Cerakote – Charging Handle DISSENT Side Charger- Left – Receiver Extension 1913 Picatinny Rail End Cap