The Steyr GB is a double-action 9×19mm semi-automatic pistol of Austrian origin, manufactured by of Steyr Mannlicher. Its mechanism employs a gas-delayed blowback action. As such the GB abbreviation stands for Gasbremse (gas brake). It was designed in 1968 by Hannes Kepplinger and Hermann Schweighofer, intended as a replacement for older handguns in Austrian military service. The weapon went into general civilian production in 1982, and in 1988 production ceased.
