The timing is also questionable, was AIM going to sell these for double if the bill passed? No idea, but odd coincidence.
Coincidence.. probably not, seems a number of companies are doing this. Sportsman Outdoor Superstore, for example, today they're selling the Bushmaster Carbon ORC and a few other rifles at discounted prices. They did the same (release and discount a number of ar-15s) the last time Diane Feinstein's bill collapsed in the Senate. Probably be wise to keep an eye on other sites for similar "deals" in coming hours/days.