I found a beautiful Stevens 620 12 gauge at a local pawn shop for $149 out the door. From its serial number and date code, I believe it was made in the early 60s. It has an 18.5" barrel and the bore is pristine. I am trying to decide if I should leave it alone, or make it into a loose Trench Gun clone. Anyone know if the Winchester 1897 heat shield will fit a Stevens? WIll the 1897 heat shield fit an 18.5" barrel?