A short-barreled rifle (SBR) is a type of firearm that has a barrel length of less than 16 inches. These rifles are designed for improved maneuverability and are often used in close-quarters situations. Due to their compact size, SBRs can be easier to handle than standard rifles, making them popular among law enforcement and military personnel. In many countries, including the United States, SBRs are subject to specific regulations. Owners must register their SBRs with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and pay a tax. This regulation aims to ensure responsible ownership and tracking of these firearms.