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. - SLR Adjustable Gas Block - 300 BLK is an incredibly adaptable cartridge with different loadings for specific uses like suppressed. With the SLR adjustable gas block on each 300 BLK DISSENT you can fine tune the gas system to best suit the supersonic or subsonic ammo loadings you like best. - TriggerTech AR-D 2-Stage Trigger - TriggerTech�s AR-D trigger was developed in collaboration with CMMG to be fully optimized for use with DISSENT firearms and upper receiver groups. With a 4 lb pull weight the AR-D trigger showcases a light repeatable break. CMMG does not guarantee optimal DISSENT functionality with Mil-spec or other aftermarket triggers. - 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 - Barrel Twist: 1:7 - Muzzle Device: CMMG ZEROED Linear Compensator - Muzzle Thread: 5/8 x 24 - Gas Port Location: Pistol - Gas Block: SLR 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: TriggerTech AR-D 2-Stage - Trigger Guard: CMMG ZEROED Trigger Guard - Safety Selector: CMMG ZEROED 60/90 Degree - Magazine: Magpul 300BLK 30rd PMAG - Weight: 4.8 lbs - Length: 14.7