Revolving cylinder firearms, commonly known as revolvers, are a type of handgun that features a rotating cylinder containing multiple chambers for ammunition. Each chamber holds a cartridge, and as the shooter pulls the trigger, the cylinder rotates to align a new chamber with the barrel, allowing for successive shots without reloading after each shot. These firearms were first popularized in the early 19th century, with notable designs like the Colt Single Action Army. Revolvers are known for their reliability and ease of use, making them a favored choice for both law enforcement and civilian use.