Standard commercial Glock 39 subcompact .45 GAP — the smallest .45 ACP-ballistic Glock produced. Type: Pistol Action: Semi-Auto Caliber: .45 GAP Capacity: 6 Year introduced: 2005, Austria Weight: 19.33 oz Overall length: 6.29" Status: Current (limited market) Intended use: Concealed Carry, Backup