“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. “