M-32 45 mm anti-tank gun

English: 45-mm anti-tank gun model 1932 (19-K) was light semi-automatic anti-tank gun developed by the Soviet Union in 1932 and used in the first half of World War II.
Polski: 45 mm armata przeciwpancerna wz. 1932 (19-K) - sowiecka armata przeciwpancerna.
Русский: 45-мм противотанковая пушка образца 1932 года (19-К)

See also: M-37 45 mm anti-tank gun