The problem with that is the feds told the media it was an AR 15 in the trunk, not a shot gun.
If the feds don't know the difference, then we really are screwed.
From the media:
“Lanza, 20, fired a Bushmaster .223 semiautomatic rifle to kill many of the 20 children and six adults at the school Friday, Connecticut State Police Lt. J. Paul Vance said. He used a Glock 10-millimeter handgun to shoot himself in the head. He also carried at Sig Sauer pistol. A shotgun, the type of which was not identified, was found in the trunk of Lanzas car outside the school. ‘The Bushmaster was used in the school, in its entirety, and [a] handgun was used to take his own life,’ Vance said.”