I don't see this being a viable product. 1) For a machine shop owner, you can already build such a "multi-shot gun" yourself quite trivially. I have a setup in

I don't see this being a viable product. 1) For a machine shop owner, you can already build such a "multi-shot gun" yourself quite trivially. I have a setup in my barn where I can spot-weld seven rifles together along the length of the barrel. I then use a bunch of loops of baling wire that run from the triggers to the end of the stock so that I can fire the correct rifle without any awkwardness. I haven't tried this with pistols but the general approach should be the same. 2) My system also has the benefit of me not being tied to one company's proprietary standard of "interchangeable" parts. If you buy a Colt, you're stuck buying Colt parts forever. With my system, I can weld together any guns I want. 3) It does not seem very "viral".