Škoda designed it for export and Turkey ordered a batch, but only received two before the Germans occupied Czechoslovakia in March 1939.

It used an interrupted screw breech with a de Bange obturator to provide the gas seal with bagged propellant.

It used both nose and base fuses, two copper driving bands and contained a 23.66 kilograms (52.2 lb) bursting charge of TNT.

[6] It accompanied that army as part of its siege train when it was transferred north to attack Leningrad in the late summer of 1942.

[7] It remained under the command of Army Group North until it re-equipped with smaller guns in July 1944.