What is the most famous gun on earth called?

The most famous gun is an AK-47 The Kalashnikov model of 1947(AK-47), which is a 7.62 mm assault rifle created by Mikhail Kalashnikov of the Soviet Union in 1947. The rifle is used officially by nearly 40 countries worldwide, and including both legal and illegal weapons sales, is currently the largest sold weapon in the world. It was made popular on the fact that it is cheaply made, and is functional under virtually any condition.