Much to their surprise, the British Government took the design to the Royal Small Arms Factory at Enfield Lock, which came up with a revolver that was externally very similar looking to the .38/200 calibre Webley Mk IV, but was internally different enough that no parts from the Webley could be used in the Enfield and vice versa. The Enfield-designed pistol was quickly accepted under the designation "Pistol, Revolver, No. 2 Mk I", and was adopted in 1932, followed in 1938 by the Mk I* (spurless hammer, double action only), and finally the Mk I** (simplified for wartime production) in 1942. Webley & Scott sued the British Government over the incident, claiming £2250 as "costs involved in the research and design" of the revolver. This was contested by RSAF Enfield, which quite firmly stated that the Enfield No. 2 Mk I was designed by Captain Boys (the Assistant Superintendent of Design, later of Boys Anti-Tank Rifle fame) with assistance from Webley & Scott, and not the other way around. Accordingly, their claim was denied. By way of compensation, the Royal Commission on Awards to Inventors eventually awarded Webley & Scott £1250 for their work. RSAF Enfield proved unable to manufacture enough No. 2 revolvers to meet the military's wartime demands, and as a result Webley's Mk IV was also widely used within the British Army in World War Two. Whilst the top-break, self-extracting revolvers used by the British and other Commonwealth militaries are the best-known examples of Webley revolvers, the company produced a number of other highly popular revolvers largely intended for the police and civilian markets. The Webley RIC (Royal Irish Constabulary) model was Webley's first double-action revolver, and adopted by the RIC in 1868, hence the name. It was a solid frame, gate-loaded revolver, chambered in .442 Webley. General George Armstrong Custer was known to have owned a pair, which he is believed to have used at the Battle of the Little Bighorn in 1876. A small number of early examples were produced in the huge .500 Tranter calibre, and later models were available chambered for the .450 Adams and other cartridges. They were also widely copied in Belgium. The British Bull Dog model was an enormously successful solid-frame design introduced by Webley in 1872.