The tsg-22 quickly and easily converts to any generation, even generation 4 of the glock models 17/22/34/35/37 into an accurate.22lr pistol.Machined from a solid piece of heat treated 4140 steel, the tsg-22 maintains a similar weight and feel to your factory glock allowing realistic shooting and training.A nitride surface treatment offers superb resistance to wear and surface friction.The barrel has a 1:16" twist.It comes with factory glock sights and includes a 10-round magazine.Type: Conversion KitModel: TSG-22Slide Finish: BlackSlide Material: SteelBarrel Length: 4.80"Barrel Material: SteelBarrel Finish: BlackCapacity: 10Includes: MagazineCapacity: 10