57 mm anti-tank gun M1943
ZiS-2
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The ZiS-2 is a Soviet 57 mm anti-tank gun used during World War II. The ZiS-4 is a version of the gun that was meant to be installed in tanks. ZiS stands for Zavod imeni Stalina, the official title of Artillery Factory No. 92, which produced the... Wikipedia
Shell: Fixed QF 57×480 mmR (AP)
Barrel length: bore: 3.95 m (13 ft 0 in) L/69.3; overall: 4.16 m (13 ft 8 in) L/73
Caliber: 57 mm (2.24 in)
Crew: 7
Maximum firing range: 8.4 km (5.21 miles)
Muzzle velocity: 1,000 m/s (3,300 ft/s)
No. built: 10,016