Complete AR-15 4.5″ 9mm Flat Dark Earth (Glock/Colt) Pistol Upper w/ 1″ Flash Can and 4″ M-Lok Hand Guard *For 9mm Glock and Colt SMG Mags.* This NEW BarDef model 945T-MFC is a complete 9mm AR pistol upper with 4.5″ barrel and a 4″ slim M-Lok free floating hand guard with a 1″ slim micro flash can. This pistol upper will match up with any brand 9mm lower receiver. The Colt SMG or Glock 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. The upper receiver is flat dark earth (FDE) T6 6061 billet with a 1913 picatinny rail flat top. It includes a matching 4″ free floating M-Lok hand guard. Both upper receiver and hand guard have a durable cerekote finish. The 1:10 twist 4.5″ barrel is 4150 chrome moly vanadium, Nitride coated and made for us to our specifications. It is tipped with an indexed 1″ flash cone 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! This high quality upper will match up with any brand 9mm lower receiver. It is complete and ready to shoot! Comes with the Barrier Defense lifetime warranty! ****Know your states laws when purchasing gun parts.****