FILE - "Ghost guns" are displayed at the headquarters of the San Francisco Police Department, Nov. 27, 2019, in San Francisco. Nevada's Supreme Court upheld the state's ban on ghost guns Thursday, April 18, 2024, overturning a lower court's ruling that had sided with a gun manufacturer's' argument the 2021 law regulating firearm components with no serial numbers was too broad and unconstitutionally vague. (AP Photo/Haven Daley, File)