No, you do not need a licence in Florida in order to buy a rifle.
Yes.
Try e-gunparts.com, Shotgun News, Gun List.
No
that rifle is the same as the Savage/ cooey/ lakefield-mossberg 64. you can buy direct from Savage Arms.
17HMRMAG.com sells a 10 round magazine for the Savage 93r17 Try numrich guns part corp.They can be found on the web.
No.
You cannot purchase the magazine separately although you can buy the bullets for it.
Try gun shops, gun shows, want ads, e-gunparts.com
Numrich Gun Parts. and Posibly Midway USA
No.
Yes