Thanks. But is the jump because it was an elementary school? Cause active shooters happened all year and after Florida MSD, there was the AWB, but not as high as a jump.
The day after the Newtown shooting, people in DC started talking about a new AW ban.
That week, OGC sold out of every AR, AK, associated mags and accessories, and ammo. It was hard to hear inside the store with the "echo" bouncing off the bare walls.
All other stores experienced the same.
Then Obama appointed Biden to come up with a comprehensive list of things the gov't can do (laws, XOs, etc) to prevent mass shootings. There was a Congressional hearing on the subject with law enforcement, mental health and gun control witnesses. Mark Kelley, the husband of Congresswoman Gabby Giffords, was included.
The gun control effort was moving full steam ahead. If they couldn't capitalize on something like Sandy Hook, then they have no chance of winning -- they said as much. Emotional appeals needed to be immediate to be most effective.
State bans don't drive sales in other states. A national ban affects all states. Bigger incentive to get yours now so it can be grandfathered in after any ban is effective.