The Tactical Solutions TSG-22(R) is a realistic-weight and accurate .22LR barrel and receiver conversion for GLOCK(R) models 17/22 and 19/23. The TSG-22 easily converts the factory GLOCK(R) 17/22 and 19/23 into an accurate and reliable 22 LR pistol which allows shooting at a fraction of the cost. Machined from a solid piece of 4140 steel, the TSG-22 maintains a similar weight and feel to the factory GLOCK(R) allowing a similar shooting and training experience. Installation is easy and is complete in seconds. Simply remove your factory upper and replace it with The Tactical Solutions TSG-22, then swap out the Glock ammunition magazine with The Tactical Solutions 10 round TSG-22 .22LR magazine. The TSG-22 Glock conversion is designed to fit GLOCK(R) generations 1 through 4, and is available with a non-threaded barrel or a threaded barrel for easy addition of a silencer.