In this March 15, 2019, file photo, a bump stock is displayed in Harrisonburg, Va. The Supreme Court has agreed to decide whether a ban on gun attachments that allow semi-automatic weapons to fire rapidly like machine guns violates federal law. The justices said Friday they’ll hear arguments next year over a gun bump stocks regulation the Justice Department implemented after the 2017 Las Vegas mass shooting. (AP Photo/Steve Helber, File)