85 mm air defense gun M1939
52-K
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The 85 mm air defense gun M1939 (52-K) was an 85 mm Soviet anti-aircraft gun, developed under guidance of leading Soviet designers M. N. Loginov and G. D. Dorokhin. This gun was successfully used throughout the Second World War against level... Wikipedia
Barrel length: 4.7 m (15 ft 5 in); 55 Calibers
Caliber: 85 mm (3.34 in)
Effective firing range: 10,500m (34,448 ft) (vertical range)
Elevation: -3° to 82°
Mass: combat: 4,500 kg; (9,921 lbs); travel: 4,500 kg; (9,921 lbs)
Maximum firing range: 15.65 km (51,127 ft) (9.72 mi)
Muzzle velocity: 792 m/s (2,598 ft/s)