World of Tanks requirements for Marks of Excellence and Mastery badges. Target damage WN8, MoE calculator.

Object 703 Version IITier 8, Heavy tank★ Premium tank

The concept of mounting two guns in a single turret was implemented back in the late 1930s in the KV tank. The ST-II heavy tank with a dual-barreled gun project was developed during the final stages of World War II. It was based on the idea that a combat vehicle should have maximum firepower. It existed only in blueprints.