A Glock 17 Type (Glock 18) Place of origin Austria Service history In service 1982–present Used by See Production history Designer Designed 1979–1982 Manufacturer Produced 1982–present No. built 5,000,000 as of 2007 Variants See Specifications Various, locked breech, tilting barrel ( for Glock 25 and 28) 375 m/s (1,230 ft/s) (Glock 17, 17C, 18, 18C) Effective firing range 50 (55 ) (Glock 17, 17C, 18, 18C) Feed system The Glock pistol is a series of -, -operated, locked-breech designed and produced by Austrian. It entered and service by 1982 after it was the top performer in reliability and safety tests. Despite initial resistance from the market to accept a perceived 'plastic gun' due to both unfounded durability and reliability concerns, as well as fears that its use of a polymer frame might circumvent in airports, Glock pistols have become the company's most profitable line of products as well as supplying national armed forces, security agencies, and police forces in at least 48 countries. Glocks are also popular firearms among civilians for recreational and competition shooting, home and self-defense, and. Contents • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • History [ ] The company's founder, engineer, had no experience with firearms design or manufacture at the time their first pistol, the Glock 17, was being. Glock did, however, have extensive experience in advanced synthetic, knowledge of which was instrumental in the company's design of the first commercially successful line of pistols with a polymer frame. Glock introduced into the firearms industry as an anticorrosion surface treatment for metal gun parts.