The name AK-47 stands for "Awesome Kills - 47" (number of awesome kills made during testing; there were 372 other kills that were not so awesome).
AK-47 is more deadly than most of the other weapons in the world. Some people even say it's more powerful than magnum. This strength cannot be explained by scientists, so experts say this gun is powered by magic. Soviet Russian dudes deny this because everything in Soviet Russia cannot be understood by YOU.