The other day I picked up a j.c higgins model 20 12ga pump. It was cut down to 20-21 inches, I have to measure it. This one has the rib and a mag cutoff. Gun is in good condition, it's a shame someone cut it. I've been on the lookout for a cut shotgun to make into a trench gun. I did some reading, Looks like a heat shield from a win97 can be made to fit. And so will a Mossberg 500 mag tube. Any off you seen other j.c higgins done into a trench gun. I believe this is the same as the high standard 200. Are there places that sell more parts for trench guns. I see numrich have the 97 heat shield, and brownnells has some for the 500 and a generic one. I believe there is a patrol/guard shotgun made from these. This photo is just one off line but is cut the same as mine, the other photo is one a guy did I found online.thanks.troy.