Small arms are lightweight firearms designed for individual use. They include weapons such as pistols, revolvers, rifles, and shotguns. These firearms are typically operated by a single person and are used for various purposes, including self-defense, hunting, and sport shooting. Small arms are distinct from larger weapons like machine guns and artillery, which require crews to operate. They are often categorized by their caliber, which refers to the diameter of the bullet. The regulation and control of small arms are important for public safety and are often governed by laws in different countries.