The Glock 27 mirrors the G26 in sub-compact format but chambers .40 S&W. For a decade it was the primary LE backup gun pairing with G22 and G23 duty weapons. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 9 Year introduced: 1994, Austria Weight: 21.71 oz Overall length: 6.49" Status: Active Intended use: Concealed Carry, Backup Gun, Personal Defense