7.62x39mm Cartridge was developed in the Soviet Union during World War II. The best thing is that it was used in the different infantry weapons. Even in the semi-automatic carbine, this particular cartridge was frequently used.
In some other weapons also 7.62x39mm Cartridge was fully compatible like a select-fire rifle and a light machine gun. Many other weapons were also developed in the post-war period to fire 7.62x39mm Cartridges. The results of the cartridge were nice and it is still being used in many parts of the world.