More hysterical nonsense. Maybe some one forgot to tell the Washing Post that the AR-15 is definately not an assault rifle.  The AR-15 has never been issued to any military force, has never been carried into battle by troops, has never been used by any military unit to assault anything.  It's just a semi automatic look a like of the M-16.  Hell, that guy was not carrying enough ammo for a few minutes of can poping.  But we forget he made the mistake of going the Washington D,C were the fruits and nuts wet all over themselves when they see an empty shell casing.