122mm Gun D-25T

The main gun of the Soviet IS-2 Model 1944, with its impressive calibre of 122mm. This makes it the biggest gun ingame. Although it is hasn't the best penetration of all heavy tanks, that's sure made up in damage. Originally known als the A-19 corps houwitser in 1931, it was modified in 1943 to fit in the brand new Iosif Stalin tank. This conversion we know as the D-25 Tankovaya (Tank mount). The D-25 remained in Soviet service until the '50s.