I'm surprised nobody has already had a good gunsmith do this to an original (but then they are worth a lot to destroy their value with such a modification) but I think there would be a market in a company like Rossi, Uberti or any company reproducing the Broomhandle Mauser in 9mm or even .357 Sig or 10mm Specifically a special version that has a 4 inch barrel with a flash suppressor and a small scope on the top or side of the gun. A few clips for 9mm to cram into the top. As an accessory have a nice belt and swivel holster to go with it. I think there would be a decent market for this (and I'm sure there are quite a few people here who know exactly why that would be.) The market may not be law enforcement or personal defense interest (except for maybe a hiking gun or even a hunting pistol with .357 Sig or 10mm) but a certain market of people who are of a different hobby I know I'd go out and buy one for $3-400.