Zulu, I have a "S" Corp - not sure about an LLC, if it's simpler or not. The folks at AccessInCorp would be able to help with that. Depending on what you're planning to do, you may want to consult a lawyer for tax, payroll, etc information.
I'm a one person corp, pretty simple and straightforward. The State even makes reregistering a snap, do it online with your credit card and have your updated papers with 3 working days.
Just remember : should the corp fold, you have to transfer or surrender the NFA weaps.
Here's another site, Florida Shooter's Network. Small but sincere little band of plinkers and shooters. Good group of folks, check it out and join up
http://pub49.ezboard.com/bfloridashootersnetwork