Does anyone have any reason to think new gun control legislation will have an effect on AR-15 uppers? I've had a JP rifle on my wish list for a while, but still can't quite afford it. I'm thinking it may be prudent to order the cheaper lower assembly now, and then get the much more expensive upper receiver down the road. It would suck to have laws go into effect prohibiting the sale of that upper between now and then. Any reason to think a new breed of definitions may be on the horizon that would effect uppers and the like?