Machine Gun, .30 Caliber, Marlin, M1917

American manufacturer Marlin Rockwell developed the lightweight Model 1917 and Model 1918 machine guns from the Colt M1895, the first successful gas-operated American machine gun. These synchronized guns replaced the heavier, forward-firing Vickers machine guns on many U.S. aircraft. They armed almost half of the U.S. SPADs and DH-4s.