Contrary to popular belief, stun guns DO NOT KILL but they can stun the person and keep that person from doing you harm, as its name implies. A stun gun produces only a very small amount of amperage compared to something like a lethal weapon that can kill a person. The required amperage to be lethal is 1 amp whereas most stun guns have amperages expressed in only milliamps from about 2 to 4 milliamps, which is not enough to hurt or kill anyone. Voltage does not kill you – amperage does. Voltage only transfers the amperage to the person or target to electrocute so even a high voltage does not exactly do harm, but make the sending of the amperage faster which may be useful for getting through tough layers of clothing.