The 9×25mm Mauser is a cartridge developed for the Mauser C96 service pistol around 1904 by DWM. Mauser pistols in this relatively powerful caliber were primarily intended for export to Africa, Asia,
9×19mm Parabellum (left) and 9mm Mauser Export (right) cartridges for comparison
The Danuvia/Király submachine guns were Hungarian submachine guns designed by Pál Király in the late 1930s and used during World War II and the 1950s.
9×25mm Mauser
…The Scotti OM 42 was an experimental Italian submachine gun in 9×25mm Mauser. The Pál Király-designed Géppisztoly 39M and 43M in 9×25mm Mauser were produced by Danuvia in Hungary from 1939 through the end of World War II. These weapons remained in Hungarian service through the…
Screenshot of the patent for the Danuvia 39M
Hungarian soldiers in 1944, one of them is armed with a Danuvia 39M