A real-steel gun is an actual firearm. It is a term used to describe a real gun versus airsoft guns which are not real guns. The term doesn't have anything to do with the weapon's materials which often consist of metal parts, polymer, and other synthetic materials. Firearms are typically used for sport or recreational shooting, such as hunting, target shooting, and competitive shooting. Real-steel guns come in many different forms, from handguns to long guns such as rifles and shotguns. When it comes to handguns, they are usually semi-automatic and can fire multiple rounds without having to reload. Long guns such as rifles and shotguns can come in pump action, bolt action, semi-automatic, and lever action. Ammunition for real-steel guns typically comes in the form of brass or steel cartridges. There are many different types of calibers when it comes to real-steel guns, such as the popular .22 LR (long rifle), .38 Special, 9mm Luger, .45 ACP (automatic Colt pistol), and the larger .50 caliber rounds. Real-steel guns require maintenance and cleaning after every range session during which they are fired since they can corrode over time if not taken care of properly. In addition to regular cleaning and oiling, it is important to store real-steel guns in a dry environment to help prevent rusting.