Tags: Weapon.
37 mm automatic air defense gun M1939 (61-K) (Russian: 37-мм автоматическая зенитная пушка образца 1939 года (61-К)) was a Soviet 37 mm caliber anti-aircraft gun developed during the late 1930s and used during World War II. The land based version was replaced in Soviet service by the ZSU-57-2 during the 1950s. Guns of this type were successfully used throughout the Eastern Front against dive bombers and other low- and medium-altitude targets.
