U-Build AR-15 10.5″ 9mm Stainless Steel Pistol Kit Glock/Colt **This upper accommodates 9mm Glock and Colt SMG Mags.** BarDef Model BD9-10.5SS-Kit is a 10.5 inch stainless steel barreled U-Build kit. This upper will match up with any brand mil-spec 5.56, multi-cal or proprietary 9mm lower receiver. Glock and Colt SMG magazines will function perfectly with any AR15 mil-spec lower using one of our Glock or Colt magwell adapters. (Check out our other items.) The BarDef kit upper features a stout bolt carrier group and 10.5 inch stainless steel barrel. This upper is a great platform for a red dot or flip-up sights (sold separately). This kit when complete is tough to withstand years of use and abuse. The kit comes ready for you to assemble so you can brag that U-Built-It! This parts kit includes everything needed to build a complete upper and lower, except a stripped lower receiver. All parts are made to standard military specifications or better. Kit Includes: (1) 10.5″ Stainless Steel Barrel (1) Proprietary 9mm Bolt Carrier Group  (1) Ultra Slim 10″ M-Lok Free Float Hand Guard (style may vary due to availability) (1) Standard Receiver End Plate (1) Mil-Spec Castle Nut (1) Pistol Buffer Tube (1) Heavy Buffer (1) Buffer Tube Spring (1) Mil-Spec Charging Handle (1) Dust Cover (1) Forward Assist (1) Bird Cage A2 Muzzle Brake  (1) Upper Receiver with Feed Ramps (1) Complete Lower Parts Kit Included w/Trigger & Hammer Comes with the Barrier Defense lifetime warranty!  ****Know your states laws when purchasing gun parts.****