Guns are tools designed to project force against a target, typically using a projectile like a bullet. They operate by igniting gunpowder or other propellants to create a rapid expansion of gas, which pushes the projectile out of a barrel. Guns come in various types, including handguns, rifles, and shotguns, each serving different purposes such as self-defense, hunting, or sport shooting. The use of guns is regulated in many countries due to safety concerns and potential for misuse. Laws often dictate who can own a gun, how it can be used, and the requirements for purchasing one. Understanding these regulations is important for responsible ownership and use.