A group of blacksmiths, wanting to create a weapon that would make them famous. Thus they choose to create Charkra Guns. Using the special metal in Chakra Kunai to absorb, compress, and shape the users chakra, turning it into a 'bullet' of chakra that at a pull of a trigger, would be launched at their opponent. The power of the bullet depends on how much chakra was used to create it and the type of gun being used. Each gun also has a certain ammount of shots before they must cooldown. Each guns ammo, power, and cooldown just depends on the maker of the gun.