Why weren't there semi automatic assault rifles in World War I? - Quora
Heavy Machine Guns of the Great War - YouTube
MG 08 - Wikipedia
Semiauto Rifles of WWI and Before -The Firearm Blog
Experimental semi-automatic rifles, 1919-1931- excluding Garand's and Pedersen's rifles - Springfield Armory National Historic Site (U.S. National Park Service)
WWI automatic weapon - table II by AndreaSilva60 on DeviantArt
Machine Guns of WWI: SADJ Commemorates the 100th Anniversary of World War I – Small Arms Defense Journal
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French 1915 Machine gun 8 mm lebel | Rock Island Auction