During the First World War, Steyr factory also produced a select-fire version of the M.12 pistol, with enlarged magazine that held 16 rounds, detachable shoulder stock-holster, and a fire mode selector on the left side of the frame, which allowed to fire the pistol in single shots or in full automatic mode. This machine pistol was known as M.12 / P.16.The nickname "Steyr Hahn" comes from the fact that this pistol has an external hammer (Hahn in German language), as opposed to striker-fired Roth M1907 pistol.
The Steyr Model 1911 / Model 1912 pistol is recoil operated weapon. It uses short barrel recoil principle, with rotary barrel locking. Barrel of the gun has two sets of lugs. Two lugs on its top are used to lock into the cuts made on the underside of the slide. The bottom lugs are used to rotate the barrel upon recoil (when following diagonal cut in the frame) and to limit the length of the recoil. The firing mechanism utilizes an exposed hammer and a single action trigger. Manual safety lever is located on the left side of the frame, above and to the rear of the left grip panel. It is also used to manually lock the slide in its open position. Steyr Model 1911 / Model 1912 pistols use integral, non-detachable single stack magazines in the grip, which are loaded from stripper clips through the loading / ejection window on the top of the slide. Magazine capacity is 8 rounds. To provide comfortable loading and unloading, gun is equipped with automatic slide stop which locks the slide in the rear (open) position once the last cartridge from magazine is fired. Gun also equipped with manual cartridge release, which allows to unload all cartridges from magazine at once through the ejection port (slide must be locked back before unloading).
|Type||Single Action semiautomatic|
|Caliber(s)||9x23 Steyr, later 9x19 Parabellum|
|Weight unloaded||980 g empty|
|Barrel length||130 mm|
|Magazine capacity||8 rounds|
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