CMMG Dissent MK4 Features The CMMG Dissent MK4 operates on a Compact Action-Direct Impingement system delivering consistent and smooth performance. The 14.5 barrel is made from 4140CM steel with a Salt Bath Nitride (SBN) finish ensuring durability and accuracy. The 1:7 twist rate is optimized for the 5.56x45mm caliber providing superior ballistic performance. The barrel is equipped with a CMMG ZEROED SVD Brake that is pinned and welded which effectively reduces recoil and muzzle rise allowing for quicker and more controlled follow-up shots. This rifle features a Dissent side charger that is reversible offering flexibility in handling. The adjustable gas block allows for precise tuning of the gas system optimizing performance with various ammunition types. The upper receiver is made from DISSENT 7075 T6 aluminum while the lower receiver is forged from Mk4 7075 T6 aluminum providing a lightweight yet durable construction. The 13.5 proprietary CMMG handguard offers ample space for mounting accessories. The DISSENT side-folding stock and folding stock adapter enhance portability and ease of storage. CMMG Dissent MK4 Specifications Platform: Mk4 Caliber: 5.56x45mm Operating System: Compact Action-Direct Impingement Barrel Twist: 1:7 Barrel Contour: MT Barrel Material: 4140CM SBN Muzzle Device: CMMG ZEROED SVD Brake Pinned & Welded Muzzle Thread: 1/2x28 Gas Port Location: Mid Gas Block: Adjustable 0.750 Upper Receiver: DISSENT 7075 T6 Aluminum Lower Receiver: Mk4 Forged 7075 T6 Aluminum Hand Guard: CMMG 13.5 Proprietary Finish: Cerakote Charging Handle: Dissent Side Charger - Reversible Pistol Grip: CMMG ZEROED Pistol Grip Buffer Type: N/A Receiver Extension: DISSENT Folding Stock Adapter Stock / Brace: DISSENT Side Folding Stock Trigger Type: ZEROED Drop-In Trigger Guard: CMMG ZEROED Trigger Guard Safety Selector: CMMG ZEROED 60/90 Degree Magazine: Magpul 30rd PMAG (2) Weight: 6.5 lbs Length: 31.7 - 33.9 (24.3 Folded)