Webley made a variety of .22 rimfire revolvers and revolver conversions for most of its history. Rimfire conversions were used by the military for reduced-cost training, and they were popular on the civilian market for sport and competition shooting. When Webley introduced its MkIV small-frame revolver, it was available in .38 and .32 caliber, and in 1932 they introduced a factory .22 rimfire model. It was intended specifically for target shooting, with a 6” barrel (the longest standard Webley barrel length) and adjustable sights. Initially it used a stepped cylinder, but this changed to a full-profile design by 1940. The firing pin was redesigned slightly to hit the rim of a cartridge instead of central primer, but the gun is otherwise mechanically the same as a normal .38 MkIV. Production ran until 1967, but relatively small numbers were made and they are fairly rare to find today.