Just suppose a fella was thinking about building a double barreled shotgun with a pistol grip. I need a little guidance. First off, I’m pretty sure it’s legal (please correct me if I’m wrong). I can’t find a minimum barrel length (it would be less than 12”). And would the pistol grip be a problem? This would be for legal carry not to hide away. I want it to be legal as far as prison time goes. Help, advice, suggestions are all welcome.