Will anything be done?

I doubt it.
As the The Hartford Courant says:

The National Rifle Association and other gun lobbyists can take great pride; they've brought gun ownership within reach of every psycho and wing nut with a crazed rage to kill.

But when the head of an organization called Gun Owners of America can tweet "Gun control supporters have the blood of little children on their hands" and mean it, then we are all living in Bizarro World.