Articles I've seen over the years say that although they have a Tallahassee, FL address, it is only a drop box at a UPS site. UPS employees forward their mail to a CO address, presumably so that they can collect the applicatents and members checks that they have swindled. They are actually based in Denver, if I remember correctly. According to the NRA they claim to represent FL hunters, shooters and outdoorsmen but, they don't have even one lobbyist registered in the state of Florida!
I've never given them anything. Fortunately, I received a warning about them, from the NRA long ago.