Maxwell/Gunter didn't require registering firearms in base housing prior to early 2001 or 2002 time frame. They did require those in dorms, tlf, billeting, etc to register weapons and store at the armory. Being in base housing one could keep their firearms in their home.
Other AF bases are different....
ETA - this may have become an issue there again since privatization of the base housing has taken place. Privatization of the housing started in mid to late 2007.