What is Lewis gun?
{{Infobox weapon | name = Lewis gun | image = Lewis Gun (derivated).jpg | origin = United States | type = [[Light machine gun]] | is_ranged = yes <!-- Service history --> | service = 1914–1953 | used_by = See [[Lewis M1914#Users|Users]] | wars = [[World War I|First World War]]<br />[[Easter Rising]]<br />[[Pancho Villa Expedition]]<ref>{{cite magazine |last=Canfield |first=Bruce |date=October 2016 |title= 1916: Guns On The Border |magazine=American Rifleman |publisher=National Rifle Association}}</ref><br />[[Emu War]]<br />[[Banana Wars]]<br />[[Irish War of Independence]]<br />[[Irish Civil War]]<br />[[Russian Civil War]]<br />[[Latvian War of Independence]]<br />[[Polish–Soviet War]]<br />[[Chaco War]]<br />[[Spanish Civil War]]<br /> [[World War II|Second World War]]<br />[[Korean War]]<br />[[Malayan Emergency]]<br />[[1948 Arab–Israeli War]]<br />[[Vietnam War]]<br />[[Algerian War]]<br />[[The Troubles]]<br />and other conflicts <!-- Production history --> | designer = Samuel McClean<br />[[Isaac Newton Lewis]]<br />[[Birmingham Small Arms Company|The Birmingham Small Arms Company Limited]] | design_date = 1911 | manufacturer = The Birmingham Small Arms Company Limited or BSA<br />[[Savage Arms]] Co. | production_date = 1913–1942 | number = At least 202,050 (50,000 in [[World War I|First World War]] and 152,050 in [[World War II|Second World War]]) | variants = Mks I–V<br /> Aircraft Pattern<br /> [[Anti-aircraft warfare|Anti-Aircraft]] configuration<br /> Light Infantry Pattern<br /> Savage M1917 <!-- General specifications --> | weight = {{convert|28|lb}} | length = {{convert|50.5|in}} | part_length = {{convert|26.5|in}} | width = {{convert|4.5|in}} | height = <!-- Ranged weapon specifications --> | cartridge = [[.303 British]]<br /> [[.30-06 Springfield]]<br /> [[7.92×57mm Mauser]]<br />[[7.62×