Built on the Mk4 platform this 10.5 9mm DISSENT® is smaller in all the right places without compromising on user friendliness. A standard AR15 magwell allows for use of CMMG® 9 AR conversion magazines while the upper receiver houses the entire action completely eliminating the need for a conventional AR buffer system. Manipulating the bolt is as simple as reaching forward and pulling the forward non-reciprocating charging handle to the rear allowing full operation while aiming downrange. - Platform Mk4 - Caliber 9mm - Operating System Compact Action-Radial Delayed Blowback - Barrel Length 10.5 - Barrel Twist 1:10 - Barrel Contour MT - Barrel Material 4140CM SBN - Barrel Twist 1:10 - Muzzle Device CMMG ZEROED Linear Compensator - Muzzle Thread 1/2 x 28 - Upper Receiver DISSENT 9mm 7075 T6 Aluminum - Lower Receiver Mk4 Forged 7075 T6 Aluminum - Hand Guard CMMG 9.6 Proprietary - Finish Cerakote - Charging Handle DISSENT Side Charger - Left - Pistol Grip CMMG ZEROED Pistol Grip - Receiver Extension 1913 Picatinny Rail End Cap - Trigger Type ZEROED Drop-In Single Stage - Trigger Guard CMMG ZEROED Trigger Guard - Safety Selector CMMG ZEROED 60/90 Degree - Magazine (2) CMMG 30rd