It isn't about preventing violence of any sort, it's to garner votes is a very liberal anti-gun state. They want these to make it to Christie, who they hope will veto them because it's the only thing they can use to prevent his re-election. They also know that even if he does sign off on them, it'll still work in their favor because it'll crush his chances at running for president. It's a win win.
Sig 1911 Traditional reverse two tone, Sig p226 .40, Sig 556 Swat patrol, Baby Eagle/jerico steel .45