Excerpt from the opinion:
For reasons that follow, we focus on the Act’s application to AR-15s and thirty-round rifle magazines. The Act’s restrictions on these items, we hold, are consistent with the principles that underpin our Nation’s tradition of firearm regulation. Whether to adopt them is thus a decision reposed in our elected representatives, and we reverse.“
Lower court found the Illinois law unconstitutional, but the 7th Circuit Court of Appeals reversed the lower court’s decision. I guess we’ll have to see what the Supreme Court has to say.