Joe,
I had the privilege of touring the old factory, but haven't been to the new location yet. They don't offer tours to the general public. They are actually subject to some state and federal laws in that respect. Most gun companies have ended public access.
S&W still does public factory tours -- although there are places that are off limits. As a member of the media, I have been able to visit the Sig factory and the Colt factory -- but not without jumping through a lot of hoops. Security was VERY tight at the Colt Defense side of Colt because of government requirements. There were many things I could not photograph, and a few things I could not even see.
But back to your point -- there really aren't any public tours of the factory. I suppose there are some exceptions, but not too many.
If you are ever in Massachusetts and have a chance to sign up for the S&W Tour -- you should do it. The S&W tour was the best mix of history, technology and generally cool stuff to see.
