A site dedicated to the collectors of the belt fed semi-automatic version of the famous Vickers Machine Gun, Mark I
These Vickes resemble their full-automatic counterparts so completely in their exterior appearance they can be used for display in museums and for film-making. However, they are manufactured to a specification approved by the US Government's Bureau of Alcohol, Tobacco and Firearms (BATF) in such a way as to only fire as a semi-automatic firearm and to completely prevent anyone from installing full-auto fire control parts from an original gun. The designation semi-automatic legally means that every time the user pulls the trigger, one shot is fired. In other words, one pull of the trigger results in one shot just like commonly used semi-automation rifles, shotguns, and pistols. Mr. Curtis Debord of American Arms Delta pioneered the development of the semi-automatic Vickers. The image above is a US Ordnance produced a semi-automatic version. The BATF approval letter for the semi-automatic Vickers is provided here.
Dolf Goldsmith, an author of books on the Maxim, Vickers, and Browning machine guns, discusses semi-automatic conversions among other topics.