Holek "assault pistol"
prolific Czech designer Václav Holek reputedly developed an early
submachine gun-type weapon in the early 1920s while he was working at
Praga Zbrojovka. This weapon was apparently known as the "assault
pistol" or "attack pistol", but it was only made in prototype form and
was never fully produced. Details about the design are unknown, although
the naming may have been influenced by Austro-Hungarian SMG projects
from World War I such as the similarly-named Sturmpistole, which had
been produced in Czechoslovakia by Škoda from 1917 - 1918. A patent
which may be related to Holek's "assault pistol" exists, depicting a
helical-type magazine for pistol cartridges, filed by Praga Zbrojovka in 1921 and
granted in 1923. However the patent does not give any indication how the
weapon itself operated or what it looked like. Any prototypes that were
produced are now presumably lost.