The Webley Mk V is a revolver that was introduced in 1915 and used primarily by the British military during World War I and World War II. It is chambered for the .455 Webley cartridge and features a top-break design, allowing for quick reloading. The revolver is known for its robust construction and reliability in various conditions. This firearm was part of the Webley series, which includes several models that served in different conflicts. The Mk V was eventually replaced by more modern sidearms, but it remains a notable piece of military history and is sought after by collectors today.