I have a Stevens 311 coach gun, I really like the Stoeger defense double. How hard would it be to mount a short rail under my barrels? I would like to hang a light or maybe one of those forend pepper spray jobs. It wouldn't have to be to pretty I'm pretty sure its worth less now that its a coach gun, Is this best left to a professioinal, or could it be tackled by an average auto tech with a machinist father?