The CMMG® DISSENT is an AR Personal Defense Weapon like no other. Incorporating a variety of new features and technologies each DISSENT is made to maximize portability and modularity most notably thanks to CMMG®’s patent-pending Compact Action that houses the entire recoil system in the upper receiver eliminating the need for the buffer tube altogether. – Chambered in 300 BLK this DISSENT packs .30 cal power in an ultra-compact package that offers AR15 ambi controls and our forward non-reciprocating side charger that can be switched for left or right-handed operation. At the rear of the lower receiver is a 1913 picatinny rail section for attaching the brace or stock* that fits you best. Each DISSENT is available in a variety of custom Cerakote finishes to match your style. – Platform Mk4 – Caliber .300 BLK – Operating System Compact Action-Direct Impingement – Barrel Length 6.5 – Barrel Twist 1:7 – Barrel Contour MT – Barrel Material 4140CM SBN – Muzzle Device CMMG ZEROED Linear Compensator – Muzzle Thread 5/8 x 24 – Gas Port Location Pistol – Gas Block Adjustable .750 – Upper Receiver DISSENT 7075 T6 Aluminum – Lower Receiver Mk4 Forged 7075 T6 Aluminum – Hand Guard CMMG 5.5 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 Magpul 300BLK 30rd PMAG – Weight 4.8 lbs – Length 15.7