A federal appeals court ruled on Thursday that California’s first-of-its-kind law requiring firearm owners to undergo background checks to buy ammunition is unconstitutional.

In a 2-1 vote, the 9th U.S. Circuit Court of Appeals in Pasadena, California upheld a lower court judge’s permanent injunction against enforcing the law.

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(Reporting by Jonathan Stempel in New York, Editing by Franklin Paul)