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
INSAS rifle an AK-47 based rifle, called the Trichy Assault Rifle was tested by the Ordnance Factory Trichy. It was first unveiled in May 2011. In January 2012, it was reported to having stoppages during tests due to its high firing rate of 800 rpm. It was to be downgraded to 650 rpm to ensure smoother operation, but it also delayed its introduction. The rifle works on tilting bolt mechanism which is different from the rotating bolt action of the AK-47. The rifle can be fired in single, burst and full auto mode. It's available with fixed butt, side folding and under