A handgun is a type of firearm designed to be held and operated with one hand. It typically has a short barrel and is used for personal defense, law enforcement, and sport shooting. Handguns come in various calibers and styles, including revolvers and semi-automatic pistols, each with unique mechanisms for firing ammunition. Handguns are popular due to their portability and ease of use. They can be carried in holsters or concealed under clothing, making them accessible for self-defense. Safety features, such as trigger locks and safeties, are important to prevent accidental discharges and ensure responsible handling.