8.3" 9mm Upper Receiver - Black | FLASH CAN | 9" Tube Handguard | Without Bolt Carrier Group and Charging Handle This barreled 8.3 inch upper receiver comes with a 9" free float tube handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean. Barrel Specifications Caliber 9mm Length 8.3" Material 4150 Chrome Moly Vanadium Profile Straight Finish QPQ Corrosion Resistant Gas System Length Blowback Dimpled? No Twist Rate 1:10 Muzzle Thread 1/2x36 Weight 13.8oz Upper Receiver:This .22LR / 9mm upper receiver assembly is made from forged 7075-T6 aluminum and is Hard Coat Anodized. It meets military specifications and comes in a true slick side configuration. The ejection port door is sized for 9mm and 22LR. This upper does not have a shell deflector, nor does it have a forward assist. Machined from a Mil-Spec 7075 T6 forging Type III Hardcoat Anodized finish Handguard: Lightweight Outside - 1.99" Inside - 1.73" Free Floating Smooth Handguard 9″ Total Length Inlcudes barrel nut Please Note: Uppers may present light fouling from our quality control process and/or test firing***Please allow an additional 2-3 business days of lead time as these uppers are made to order.*** SKU: BU-839MMTBFC-BLK UPC: