The Steyr GB is a unique Austrian pistol using a gas-delayed blowback mechanism, providing a soft-shooting 9mm with an 18-round magazine. The GB stands for Gas Braking, referring to the delayed blowback operating system. Type: Semi-Auto Pistol Action: Delayed Blowback Caliber: 9mm Luger Capacity: 18 Year introduced: 1981, Austria Weight: 2.3 oz Overall length: 8.27" Status: Discontinued Intended use: Collector