We strongly discourage anyone from trying to make a homemade self defense stun gun. McGyver might be able to do it correctly but there are too many mistakes that could be made. A factory built stun gun is much more effective plus the manufacturer built stun guns also go through a quality control process.
We know that no matter how much we warn against making a homemade self defense stun gun there is still a great deal of interest in the subject. We are presenting the following video to satisfy the curiosity of those that are interested in homemade stun guns.
As the saying goes "Please, Do Not Attempt This At Home"