Stun gun is such a device that is used for the immobilization or stops something or someone from moving by applying an electrical shock. There are several types of stun gun based on the electric shock it creates which is ranging from 100,000 to 4,500,000V. If electrical shock that produces by a stun gun is applied on a body generating an electrical noise in the body which creates a pain in the body. This noise breaks nervous communications between the body and the brain for a short period of time. Although a high voltage is applied for a short time through it but the amount of charge is very small, so it doesn’t creates any harmful injury to the body.