But non-violence is the best weapon.
It is the eventual lesson of history that if the other guy has a gun, better you should also have a gun. And if he's acting monstrous, better to wipe off him from the canvas of earth. Play by rules, adapt deadliest defense strategies and actualize your enemies that if they harm you, they will burn like hell along with their motherland. This page of Topyaps, attempts to focalize the list of ten countries which saluted the importance of nuclear weaponry with their large-scale engagement in its production.
AK-47 is after Russia's Avtomat Kalashnikova.