Out of stock
SKU: CMMG99B80E4
UPC: 810097509856
MPN: 99B80E4-AB
The CMMG Dissent Complete Upper Receiver in 9mm with a 10.5" barrel delivers a purpose-built platform for shooters who demand compact, reliable firepower in a semi-compact format. Designed for AR-15 platform enthusiasts, this upper receiver assembly serves law enforcement, military personnel, and civilian operators seeking a versatile 9mm carbine or pistol-caliber solution.
The 10.5" barrel length balances velocity retention with maneuverability, making it ideal for home defense, close-quarters drills, and designated marksman applications where 9mm performance meets tactical precision. Built on CMMG's proven 9mm platform engineering, the Dissent upper integrates a properly tuned bolt carrier group and barrel assembly optimized for 9mm NATO and commercial ammunition reliability.
As a complete upper receiver, this assembly arrives ready to mate with any standard AR-15 lower receiver (in compliance with your jurisdiction's regulations), eliminating guesswork in parts compatibility and ensuring headspace and timing specifications are factory-verified. Installation is straightforward for anyone familiar with AR-15 systems—simply secure the upper to your lower via the takedown pins. This upper receiver excels for shooters building pistol-caliber carbines, those upgrading existing 9mm platforms.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
