A local gun store just put a Winchester 1897 up for sale. I don't know anything about these. A short description from memory. 20 inch barrel, no heat shield. At the end of the barrel underneath there were 2 marks looking like some kind of clamp was on the end of the barrel. They want $325. It is in fair condition. What to look for on these things? Are trech guns marked M97 or marked to indicate it was a trench gun and not a riot? From a quick look over there were no marking indicating it belong to the military.