Firearms are handheld weapons designed to propel projectiles, typically bullets, with the use of explosive force. They come in various types, including pistols, rifles, shotguns, and submachine guns, each serving different purposes and applications. Firearms have been a significant tool for self-defense, hunting, military operations, and sport shooting throughout history. They consist of components such as a barrel, action, trigger mechanism, magazine, and stock or grip, which work together to facilitate the firing process and projectile propulsion. Firearms are regulated by laws and regulations in most countries to ensure safe and responsible ownership and usage.