Firearm a battle rifle such as the Karabiner 98k, but the chief differences defining an assault rifle are select-fire capability and the use of a rifle round of lesser power, known as an intermediate cartridge. Soviet engineer Mikhail Kalashnikov quickly adapted the German concept, using a less-powerful 7.62×39mm cartridge derived from the standard 7.62×54mmR Russian battle rifle round, to produce the AK-47, which has become the world's most widely used assault rifle. Soon after World War II, the Automatic Kalashnikov AK-47 assault rifle began to be fielded by the Soviet Union and its allies in the Eastern Bloc, as well as
Type 81 assault rifle Chinese Type 56 assault rifle (a license produced AK-47), but it has a SKS-like short-stroke gas-piston design and other improvements to reduce recoil and muzzle jump, giving better firing accuracy. Notable physical differences from the Type 56 assault rifle include the stock of the rifle, the length of the action, bayonet, and the positioning of the front sight. The most easily distinguishable feature of the Type 81 is the more exposed muzzle part of the barrel. The front sight has been moved back as a modification to be able to fire 22mm rifle grenades, which are slid over the unobstructed