Some of us also find it odd that a main reason given for not changing is a document designed for a situation that existed 220 years ago. Banging rocks together is an exagerration but as a metaphor it works for us.

We may have constitutional anachronisms (monarchy, House of Lords etc) but one massacre related to assault rifles and out they go, then one related to hand guns and out they go. The design function of these things is killing people. Other firearms are designed for killing things ranging from rats to red deer and we still have those under fairly strict control.