A federal judge is blocking a California gun law that requires people to undergo a background check before purchasing ammunition. On Thursday, U.S. District Judge Roger Benitez tossed the ammunition regulations, calling them “onerous and convoluted,” adding that they violate a citizen’s Second Amendment rights. Benitez reportedly claimed the law blocked legitimate sales to law-abiding citizens, about 16% of the time. He also ruled that California’s ban on importing ammo from outside the state violates federal interstate commerce laws. The state attorney general’s office is reviewing the decision but did immediately say if it would appeal the decision or not.