A stun gun is a handheld device designed to incapacitate a person temporarily by delivering a high-voltage electric shock. It works by disrupting the body's electrical signals, causing muscle contractions and disorientation. Stun guns are often used by law enforcement and security personnel for self-defense and crowd control. Unlike a Taser, which fires projectiles to deliver the shock from a distance, a stun gun requires direct contact with the target. Stun guns are considered non-lethal weapons, but they can still cause injury if misused or used on individuals with certain medical conditions.