Winchester Model 1897 The Winchester Model 1897, also known as the Model 97, M97, or Trench Gun, is a pump-action shotgun with an external hammer and tube magazine manufactured by the Winchester Repeating Arms Company. The Model 1897 was an evolution of the Winchester Model 1893 designed by John Browning. Issued to US troops during WW1, this beauty was also known as a Trench Broom; probably the only thing more effective would be a sackful of grenades. The Germans issued a formal complaint against it's use. 1 1/2 hour long video, well worth the time spent, the dude only says uh once.