The Remington Model 10 is a pump-action shotgun designed in 1908 by John Pedersen for Remington Arms.^[2] It has an internal striker within the bolt and a tube magazine which loaded and ejected from a port in the bottom of the receiver.^[5] An updated version, the Model 29, was introduced in 1930 with improvements made by C.C. Loomis.^[3]

The United States military used a short-barreled version known variously as the "trench" or "riot" shotgun.^[6] The Winchester Model 1897 was the major production, but Remington made 3,500 of the Model 10-A version for issue to U.S. troops during World War I.^[6] The Model 10 was modified by reducing the barrel length to 23 inches (58 cm) and adding sling swivels, a wooden heat shield over the barrel, and an adapter with bayonet lug for affixing a M1917 bayonet.^[6] These trench guns with serial numbers between 128000 and 166000 were stamped with US and the flaming bomb insignia on the left side of the receiver.^[5] The United States military also purchased a number of Remington Model 10 with 20-inch (51-cm) barrels for guarding prisoners and 26 to 30-inch (66 to 76-cm) barrels for training aerial gunners.^[6] The Model 10-A was used in limited numbers by the Marine Corps through the 1930s.^[6]