The Glock 37 is the full-size .45 GAP pistol, chambering the .45 GAP cartridge developed by Glock and Speer to deliver .45 ACP ballistics from a standard-size Glock frame. The G37 offers .45 caliber performance in a frame that fits hands sized for the G17 and G22. Type: Semi-Automatic Pistol Action: Striker-Fired Caliber: .45 GAP Capacity: 10 Year introduced: 2003, Austria Weight: 27.7 oz Overall length: 8.15" Status: Discontinued Intended use: law_enforcement, self_defense