Never seen a handgun that takes a clip. Unless you're talking about half-moon clips for feeding rimless cartridges into a revolver... Do you mean "magazine?"
If it's banned, then hide it until the ban expires and use a 7 rd mag with one in the pipe., that way you gots 8. Or sell it for 4 times what you paid for it and buy a whole bunch of 7 rd mags. Just my .02