A revolver is a type of firearm that features a rotating cylinder containing multiple chambers for ammunition. Each chamber can hold a bullet, and as the trigger is pulled, the cylinder rotates to align a chamber with the barrel, allowing the gun to fire. Revolvers are known for their reliability and ease of use, making them popular for both self-defense and sport shooting. The design of a revolver typically includes a handle, a trigger, and a barrel. Some well-known models include the Colt Python and the Smith & Wesson Model 686. Revolvers can be single-action or double-action, referring to how the trigger mechanism operates to fire the weapon.