Editing Machine pistol (section)

=== World War I ===
During World War I, a machine pistol version of the [[Steyr M1912 pistol|Steyr M1912]] called the [[Steyr M1912#Maschinenpistole M.12 Patrone 16|''Repetierpistole M1912/P16'']] was produced. It used a 16-round fixed magazine loaded via 8 round stripper clips, a detachable shoulder stock and a rather large exposed semi-auto/full-auto selector switch on the right side of the frame above the trigger (down = semi & up = full).<ref>{{citation |title=The Illustrated Encyclopedia of Handguns. Pistols and Revolvers of the World 1870 To 1995 |first=A.B |last=Zhuk |translator = N.N. Bobrov |editor-first=John |editor-last=Walter |publisher=Greenhill Books, London|date= 1995| page=176}}</ref> It fired the [[9×23mm Steyr]] cartridge, with a full-auto rate-of-fire of about 800 to 1,000 rounds per minute (RPM). It weighed about 2.6 pounds. Introduced in 1916, it is considered one of the world's first full-auto capable pistols. Only 960 M1912/P16 were made.

An automatic version of the [[Frommer Stop]] pistol was also tested, including a variant known as the ''Doppelpistole'' where two guns were joined together and mounted upside down on a tripod.<ref>{{Cite web |title=Frommer M.17 |url=http://firearms.96.lt/pages/FrommerM17.html |access-date=2023-06-19 |website=firearms.96.lt}}</ref>

In 1916, Heinrich Senn of Bern designed a modification of the Swiss Luger pistol to fire in single shots or in full-automatic. Around the same time Georg Luger demonstrated a similar Luger machine-pistol which inspired the German Army to develop submachine guns.<ref>{{Cite web |title=Maschinenpistole Senn (Luger conversion) |url=http://firearms.96.lt/pages/Senn.html |access-date=2023-06-19 |website=firearms.96.lt}}</ref>