(CNN) - It has been called the most popular rifle in America, and it briefly returned to the spotlight after Monday's shooting at the Navy Yard: the AR-15.
A U.S. law enforcement official said Monday that gunman Aaron Alexis unleashed a barrage of bullets using an AR-15, a rifle and a semi-automatic handgun. Authorities believed the AR-15 was used for most of the shooting, the official said. The news prompted Sen. Dianne Feinstein, one of the strongest proponents of a ban on assault weapons like the AR-15, to issue a statement the same day asking, "When will enough be enough?"FULL STORY