Prototype <a href="https://en.wikipedia.org/wiki/Gas-operated_reloading" class="extiw" title="en:Gas-operated reloading">gas-operated</a>, <a href="https://en.wikipedia.org/wiki/Locked_breech" class="extiw" title="en:Locked breech">locked-breech</a> self-loading pistol made by <a href="https://en.wikipedia.org/wiki/John_Browning" class="extiw" title="en:John Browning">John M. Browning</a>, US patent <a rel="nofollow" class="external text" href="https://patentimages.storage.googleapis.com/d9/55/bf/efbb9c4c5f7749/US580923.pdf">No. 580923</a> (applied 14 September 1895, but not granted until 20 April 1897).<br>This design pistol worked similar to the <a href="https://en.wikipedia.org/wiki/M1895_Colt%E2%80%93Browning_machine_gun" class="extiw" title="en:M1895 Colt–Browning machine gun">Colt-Browning machine gun</a> (the “potato digger”).
Unknown author<span style="display: none;">Unknown author</span> for US Army
<a href="https://en.wikipedia.org/wiki/Edward_Clinton_Ezell" class="extiw" title="en:Edward Clinton Ezell">Edward Clinton Ezell</a>: <i>Handguns of the World. Military Revolvers and Self-Loaders from 1870 to 1945.</i> Stackpole, <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-88029-618-6" title="Special:BookSources/0-88029-618-6">ISBN 0-88029-618-6</a>, p. 267.