Product DescriptionThe CMMG DISSENT upper receiver group is engineered to house the entire action and recoil assembly within the upper receiver, helping reduce overall bulk and length compared to traditional AR-style pistol configurations. Built with a 7075-T6 aluminum upper and paired with a 10.5-inch barrel, this 5.56x45mm NATO upper is designed for compact performance and modern modularity. A forward non-reciprocating side charger allows fast bolt manipulation while helping the shooter stay on target, while the 9.60-inch M-LOK handguard provides lightweight accessory mounting and a streamlined profile. Finished in Sniper Gray Cerakote and equipped with a CMMG Zeroed Blast Compensator, this DISSENT MK4 upper group blends durability, control, and premium CMMG design.Product Highlights DISSENT upper group design contains the action and recoil assembly in the upper receiver for a more compact overall package. Forward non-reciprocating side charger supports quick and efficient bolt operation without breaking sight picture. Chambered in 5.56x45mm NATO with a 10.5-inch barrel and 1:7 twist rate for compatibility with a broad range of bullet weights. 9.60-inch M-LOK handguard offers versatile accessory mounting with a sleek, lightweight aluminum layout. Sniper Gray Cerakote finish, steel barrel, and CMMG Zeroed Blast Compensator deliver durability and a refined, ready-to-install setup. Specs Product Type: Upper Receiver Group Brand: CMMG Model: DISSENT Gun Platform: MK4 Caliber: 5.56x45mm NATO Barrel Length: 10.50 in Twist Rate: 1:7 Handguard Length: 9.60 in Handguard Type: M-LOK Receiver Material: 7075-T6 Aluminum Barrel Material: Steel Finish: Cerakote Color: Sniper Gray Muzzle Device: CMMG Zeroed Blast Compensator Thread Pattern: 1/2x28 UPC: 810097509313 Manufacturer Part Number: 55B8D86-SG Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.