The Glock family of pistols, once started by famous Glock 17 pistol, was developed by Austrian company Glock Gmbh., previously known for quality knives and entrenching tools. The Glock 17 pistol first appeared at the Austrian Army trials, won it and was adopted by Austrian Army and Police in the early 1980s. Since then, the Glock 17 and its descendants became very popular military and law enforcement firearms, being exported in more than 50 countries. Currently, Glocks are chambered in all major pistol calibres, namely 9x17mm Short (.380ACP), 9x19mm Luger, .357SIG, .40SW, 10mm auto and .45ACP. Also, Glocks available in full-size service models, semi-compact models, compact models for concealed/backup carry, and in long slide competition models. Training versions, firing non-lethal practice ammo is also available. Training versions are distinguished from "live" ones by frame colour - blue frame for guns that fire non-lethal ammunition and red frame - for non-firing guns.