The Karabin przeciwpancerny wz.35 was designed in 1935. It was extensively used during the Invasion of Poland of 1939 by most Polish units.
Approximately, an amount 8000 of wz35 were made during the war until the Fall of Poland.
This anti-tank rifle was based on the Karabiner 98k, with the action modified to sustain the higher pressure of the new cartridge and the barrel lengthened significantly.
It was capable of penetrating a 15 mm steel plate at a distance of 300 metres with similar results against angled steel plate, slopped at 30° at 300 m distance, or 33 mm of armor at 100 m.
After Poland was overrun by Germany and the Soviet Union, large quantities of this weapon were captured. The Germans pressed it into service as Panzerbüchse 35 (polnisch) (PzB 35(p)), and sped up work on their own simplified, one-shot anti-tank rifle Panzerbüchse 39 (PzB 39). According to some sources, however, the Germans replaced the DS bullets in the captured ammunition with their own 7.92 mm hardened-steel-core bullets from the PzB 39.
In 1940, Germany sold some 800 Polish antitank rifles to the Italian armed forces, which used them in combat until the end of World War II.