Top-break revolver, standard British sidearm of WWI. Breaking the frame simultaneously ejects all spent cases. .455 Webley cartridge. Many were later converted to .45 ACP by the US and others. Type: Revolver Action: Double-Action/Single-Action Caliber: 455 Webley Capacity: 6 Year introduced: 1915, UK Weight: 38 oz Overall length: 11.25" Status: Discontinued Military use: Yes Intended use: Military, Collector