Product Description The CMMG DISSENT 9mm upper group is built for compact AR-platform performance by housing the complete action and recoil assembly in the upper receiver. Utilizing CMMGs Compact Action with Radial Delayed Blowback technology and a fixed ejector, this design reduces overall bulk compared to traditional AR pistol setups while maintaining reliable function. A forward, non-reciprocating left-side charging handle supports fast manipulation without breaking your sight picture. Finished in Armor Black and equipped with an OEM Zeroed Linear Compensator, this upper includes a 1913 Picatinny rail end plate to replace the lower receiver buffer tube for streamlined PDW-style builds. Product Highlights Compact Action with Radial Delayed Blowback operation helps deliver a shorter, cleaner AR-style 9mm upper setup Forward non-reciprocating left-side charging handle for quick bolt operation while staying on target OEM Zeroed Linear Compensator and 1/2x28 threaded muzzle for effective, versatile muzzle configuration 4.60 inch M-LOK handguard provides lightweight accessory mounting and a secure grip area Includes 1913 Picatinny rail end plate for bufferless-compatible rear mounting options Specs Brand: CMMG Model: DISSENT Upper Group Manufacturer Part Number: 94B6829AB UPC: 810097509788 Caliber: 9mm Luger Barrel Length: 6.50 inch Twist Rate: 1:10 Muzzle Thread: 1/2x28 Muzzle Device: CMMG Zeroed Linear Compensator Handguard: 4.60 inch M-LOK Finish/Color: Armor Black Compatibility: Mk4/standard AR15 lower receivers (with CMMG 9AR conversion mags), MkGs, Mk17 Included: 1913 Picatinny rail end plate (buffer tube replacement) 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 products manufacturer.