Manufactured in 1919 by Winchester as a trench shotgun. Single brass bead sight on the 1918 patent dated bayonet lug, original six-hole heat shield marked "PAT. JAN. 15 & MAR. 19, 1918" and barrel marked for cylinder choke. No American military markings are present. 18-groove forearm, smooth pistol grip stock, checkered Winchester buttplate and "1918" dated leather sling. An undated "W" marked 1917 pattern bayonet is also included.

Very fine, with 76% plus original blue finish, showing areas of brown patina, bright edge wear, driver marks on the screws, dents and scratches concentrated on the heat shield, and mild handling marks. A thin scuff is present on the right side of the barrel, just below the heat shield. The wood is also very fine, with a few light scratches and dings, and attractive grain in the buttstock. The bayonet is very fine, shows a mixed brown patina and mild spotting. Mechanically excellent.