Glock Model 17 in 9 MM Semi Auto Pistol. New in Box with Papers, 2-17 Round Magazines and loader. The GLOCK 17 in 9 MM is the most widely used law enforcement pistol worldwide. Because of its unsurpassed reliability, above-average magazine capacity of 17 cartridges in the standard magazine and its low weight, it is trusted by law enforcement officers in their daily duties throughout the world. It is safe, easy and quick to use through the revolutionary “Safe Action” trigger system. GLOCK 17 – designed for professionals. New in box. Glock#: PI1750203.