The company's founder, head engineer Gaston Glock, had no experience with firearms design or manufacture at the time their first pistol, the Glock 17, was being prototyped. 2.8 Commemorative, anniversary, engraved, and other rare Glocks.1.2.4.1 2011 recoil spring assembly exchange program.In 2020, the Glock 19 was the best selling pistol on GunBroker. Glocks are also popular firearms among civilians for recreational and competition shooting, home- and self-defense, both in concealed or open carry. Glock pistols have become the company's most profitable line of products, and have been supplied to national armed forces, security agencies, and police forces in at least 48 countries. The firearm entered Austrian military and police service by 1982 after it was the top performer in reliability and safety tests. Glock is a brand of polymer- framed, short recoil-operated, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H. Short recoil, locked breech, tilting barrel ( straight blowback for Glock 25, 28 and 44)