First off, thanks for the replies, guys.
I called both the city attorney and crime prevention unit of the local PD, who both gave about the same answers: that they're not really sure of any law that would limit my ownership. One of the guys from the PD, though, stated that he thought hi-cap mags were legal to own, but illegal to sell to me. I was under the impression that this only applied to post-ban high-cap mags (and possibly he was confused)? The officer knew what an AR-15 was, as he said he used an M16 in the military, but the city attorney didn't know what one was and had to be informed that it's a rifle :).
223spree: The law was enacted a year before I was even born, so I have very little information about the climate of the community (but if it's anything like it is now, there isn't jack shit going on).
A_Free_Man: I'm not planning on sticking around too much longer, let alone living here the rest of my life.
Once again, thanks.