Complete AR-15 8.5″ 9mm Pistol Upper w/ 4″ Slim M-Lok Hand Guard *For 9mm Glock and Colt SMG Mags.* This NEW BarDef model 985-4 is a complete 9mm AR pistol upper with 8.5″ barrel and a 4″ slim M-Lok free floating hand guard. This pistol upper will match up with any brand 9mm lower receiver. Glock and Colt SMG magazines will function perfectly with any mil-spec AR15 lower using one of our magwell adapters. (See other listings.) This complete upper features a dual Glock/Colt compatible bolt carrier group and includes the charging handle. Upper receiver is T6 6061 billet with 1913 picatinny rail flat top and durable cerakote finish. The barrel is 4150 chrome moly vanadium, Nitride coated and made for us to our specifications. It’s then tipped with an A2 indexed flash hider threaded 1/2″-36. Because this 9mm upper uses its own generated energy to cycle the next round, there is no need for a gas system, thus making it lighter. Lighter than most other AR pistol uppers! It weighs in at an incredibly light 4 pounds. Comes with the Barrier Defense lifetime warranty!  ****Know your states laws when purchasing gun parts.****