Before Colt invented the revolver, all revolvers were manual revolvers, and Colt's revolver was rotated by a hammer to be fired. The birth of this automatic revolver made all previous manual revolvers pale in comparison. Compared to previous revolvers, the Colt revolver has the following unique features: the magazine is a revolver with a magazine that can rotate around an axis, and each magazine matches the barrel in sequence during firing. Can be installed on the wheel5Bullet fired, barrel caliber is9Millimeters. And it adopts the most advanced impact type gun mechanism at that time, with a firing cap and a rifled barrel, small size, light weight, compact structure, and complete functions.