Gun control efforts in California took a big hit on Thursday as the 9th Circuit Court struck down a state law requiring background checks to buy ammunition.

A divided federal appeals court said California's law requiring firearm owners to undergo background checks to buy ammunition is unconstitutional, violating the Second Amendment right to bear arms.

A California law requiring background checks for ammunition purchases is unconstitutional, a split federal appeals court said Thursday, striking down the state’s first-in-the-nation gun-control effort ...