The 2-1 ruling found that the ban violated the Second Amendment right to bear arms and that a San Diego judge should have blocked the ban

Judge Ryan Nelson invoked the American Revolution in the ruling, saying America would not exist without young men who were able to take up arms 

Gun rights advocates failed to block a requirement that all adults under 21 must have a hunting license to purchase rifles and shotguns

A U.S. appeals court ruled Wednesday that California's ban on the sale of semi-automatic weapons to adults under 21 is unconstitutional.

In a 2-1 ruling, a panel of the San Francisco-based 9th U.S. Circuit Court of Appeals said the law violates the Second Amendment right to bear arms, and that a San Diego judge should have blocked what it called 'an almost total ban on semi-automatic centerfire rifles for young adults.'