Recovering Catholic myself.
But on topic, I'm hearing now too that Lanza may not have used the Bushmaster in the shootings after all. If he didn't and stuck to using his semi-auto pistols, then it's another incidence of a mass shooter fitting into the category of the most often used weapons by mass shooters. Semi-auto pistols (the "cool" ones like Glocks) are far and away more often used for mass shootings than assault rifles. 1) They are easier to get, 2) easier to conceal, and 3) there's a hell of a lot more of them than there are assault rifles.
While a ban against assault rifles is at least likely if for no other reason than we've had them before, a ban against semi-auto pistols will never happen in the US.
I still think serious action will only take place when there's a mass shooting in the House of Representatives or the Senate. Even the shooting of Gabrielle Giffords and some other people didn't do much to change any gun laws.