The U.S. Supreme Court declined on Monday to hear a challenge to the legality of state restrictions on assault-style rifles and large-capacity ammunition magazines, passing up cases that offered the justices a chance to further expand gun rights.

The Supreme Court declined Monday to hear arguments in a significant Second Amendment challenge to Maryland’s ban on certain semi-automatic weapons, a move that leaves the state’s law in place.

Judges have struggled to apply the Supreme Court's controversial bar for gun restrictions that says bans must be grounded in historic tradition.