The TSG-22² quickly and easily converts any generation of the Glock models 17, 22, 34, and 35 into a .22LR pistol. Machined from a solid piece of heat treated 4140 steel, the TSG-22² 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 TSG-22 ²fits comfortably onto your Glock frame in just seconds. As with our other conversions, the savings on ammunition will make you glad you made the switch. Options such as a threaded barrel make attaching your favorite accessories a snap. Unmatched performance, design, and usability make the TSG-22² the best gift for the most popular of pistols. •Heat treated 4140 steel slide with Nitride surface treatment for optimum strength, increased corrosion resistance and increased wear resistance. •The TSG-22² 17/22 easily fits all generations of the following Glock® models: 17, 22, 34, 35, & 37 and the TSG-22² 19/23 easily fits all generations of the following Glock® models: 19, 23, 32& 38 with no gunsmithing required. •Comes with one durable polymer 10 or 15* Round Magazine featuring a last round hold open. •Threaded barrel** in ½” x 28 TPI. Lower pistol frame not included