This is a fine representative example of a very scarce period assembled World War I Remington-UMC Model 10-A trench shotgun manufactured under a U.S. Army contract for 3,500 and found in the serial number range of 117731-165566, with most being reconverted back into riot or sporting shotguns over time. A Model 10-A trench shotgun is considered the apex of any U.S. Military shotgun collection. The Remington Model 10 shotgun was originally designed by the well respected Engineer John Pedersen; with the trench variation modified with a 23-inch barrel, wooden handguard, and bayonet lug for use with the M1917 bayonet. Serial number "U/151955" marked on the front underside of the receiver. The period replacement barrel is correctly roll marked with the Remington circled "REP" factory proof along with the non-matching serial number "164748" marked upside down on the lower right rear side of the breech. The top of the barrel is correctly marked (under the handguard) "MODEL 10-A" ahead of the three-line "REMINGTON ARMS-UNION METALLIC CARTRIDGE CO./REMINGTON WORKS, ILION, NEW YORK, U.S.A./PATENTED FEBRUARY 3, 1903, AND MAY 16, 1905." The barrel is fitted with a matte blued bayonet lug with an "eagle head/250" proof on the front end. "Flaming bomb/US" marked on left of receiver. Fitted with an oil finished walnut handguard, ribbed pump handle, smooth pistol grip buttstock, and serrated steel buttplate. Sling swivels attached to the front end of the magazine tube and underside of the buttstock. Includes a Remington-UMC M1917 bayonet, olive drab green painted leather scabbard, and 1918 dated H&P M1907 leather sling. Provenance: The Steven Preston Military Collection