Oh, now that's a stretch. I don't buy that high-capacity magazines are constitutionally protected. You *can* get smaller magazines for AR-15 rifles - I think as small as 5 rounds, in fact. They are just a lot harder to find. The 'high-capacity' magazines are what the military uses (of course, their M16s are fully automatic, so a larger capacity magazine can actually be helpful in a firefight). As such, they are very common and readily available.
The problem lies in what constitutes a high-capacity magazine. Who gets to define that? As I said in a previous post to clo, if the arbitrary limit is set to 10 rounds, and someone fires all 10 shots, killing someone with the last shot, then suddenly 10 rounds is too many - we have to go to 9. And so on.
What is the point of rules that are not enforced?