Steyr M1912 Semi-Automatic Handgun
|Type||Semi-automatic handgun, Machine pistol|
|Place of origin||Austria-Hungary|
|Number built||Up to 300,000|
|Weight||1.2 kg (2.6 lb)|
|Length||216 mm (8.5 in)|
|Barrel length||128 mm (5.0 in)|
|Muzzle velocity||1,120 ft/s (341 m/s) 9x19mm Parabellum|
|Effective range||50 m (160 ft)|
|Feed system||8 round integral magazine, fed by stripper clips|
The Steyr M1912 is a semi-automatic pistol developed in 1911 by the Austrian firm Steyr Mannlicher and designed by Karl Krnka, based on the mechanism of the Roth-Steyr M1907. It was developed for the Austro-Hungarian Army and adopted in 1912 as the M1912. It was in service in a limited capacity for the Wehrmacht until the end of World War II.
The Steyr M1912 is usually known as the Steyr-Hahn (Steyr-Hammer). Ostensibly this is because of its external hammer but contemporary designs and indeed earlier Steyr designs also used an external hammer, so this is open to debate.
The M1912 was originally chambered for the 9mm Steyr round, but after the annexation of Austria by Germany in 1938 the M1912 was taken into Wehrmacht service and about 60,000 were rechambered in 9mm Parabellum and remained in service until the end of the war.
The M1912 was developed as the Model 1911 as a military weapon, but it was not accepted until 1914 as the M12. It was originally issued to the Austrian Landwehr while common army units were issued Roth-Steyr M1907 handguns and Rast-Gasser M1898 revolvers. Orders were also placed by Chile and Romania. During World War I, Austria-Hungary experienced shortages of handguns and production of the M1912 was increased. Germany also placed an order for 10,000 pieces (not to be confused with the later incorporation of the M1912 by the Wehrmacht in World War II), chambered for 9mm Steyr cartridge.
After World War I, a commercial model (The Steyr M1911) was produced and was quite popular with army officers, but Steyr had to rely on foreign exports to sustain production. After the annexation of Austria by Germany, the Wehrmacht placed a small order (60,000+) chambered in 9mm Parabellum. In German service, its official designation was 9mm P12(Ö)('Ö' for Österreichische, "Austrian"). Pistols in Wehrmacht service were distinguished by the 08 stamp on the slide and the Wehrmachtadler ("Wehrmacht Eagle") emblem above the trigger.
The M1912 is a dependable and consistent performer, its operating system generally of good quality was able to endure the filthy conditions of trench warfare during World War I without much cause for concern.
Design details 
The Steyr M1912 handgun is operated by a system of short recoil, the barrel unlocking from the slide by rotation. As the pistol is being fired and the recoil of the pistol is in motion, a lug and groove system around the barrel rotate the barrel 20° until a lug hits a stop wedge and holds the barrel while the slide is free to continue its rearward travel, the extractor claw withdrawing the spent casing against the breech face of the slide until the casing strikes the ejector and departs the weapon via the ejection and loading port. Shortly after ejection the slide's rearward travel is arrested by the compressed recoil spring and the abutment of mated surfaces of the slide and frame. The recoil spring is now free to return its stored energy to the cycle of the weapon by beginning to return the slide forward.
As the return spring returns the slide forward, the breech face strips a round from the magazine into the chamber and the locking system engages the barrel and locks it with the slide in the battery position. A safety lever on the left side of the frame can be engaged by turning it into a notch on the slide to immobilize the slide. A disconnector system will also prevent the weapon from firing until the whole action is fully closed.
Although the magazine is situated in the grip, it is integral with the weapon and is loaded from above using eight-round stripper clips. To load, the slide is pulled back to expose the action, the clip is inserted along the guides and the rounds pushed into the magazine.The metal strip is then discarded.
As with the majority of pistols with integral magazines, a lever can be used disengage the magazine catch in order to eject the magazine load.
- McNab, Chris (2002). Twentieth-Century Small Arms. Hoo, Rochester, Kent: Grange Books. ISBN 978-1-84013-381-3.
- Henrotin, Gerard (2009). Steyr pistol 1912 explained (ebook). Belgium: HLebooks.com.
- "Штейр" модель 1912 (Russian)
- 9 мм | Энциклопедия вооружения (Russian)
-  (English)
- Loading and Firing the Steyr M1912 on YouTube