Slightly wrong

You are incorrect in saying that there has never been proven a correlation between strict gun laws and lower crime . It's less successful in the United States (and sometimes it's been shown to have a negative correlation, but I suspect that just means the laws were ineffective and crime was rising naturally), but internationally where the laws have been even more strict there is evidence is does curb violent crime.

Your views on Swiss gun policy is overly simplistic and looks over many of the regulations they actually have. Gun ownership is high, but carrying permits for public places if you are off-duty or non- military are very difficult to get; most guns are registered and some ammunition is depending where you buy and the manufacturer; and you can't even keep the ammunition in most guns (there are some confusion based on local canton laws about this though).

To be frank though, many of the laws are not well enforced and they differ so widely between cantons that many times they are not enforced at all if you move between cantons because nobody cares. I don't have stats or anything to support that, but I have a lot of Swiss friends and family who tell me it hasn't changed since I left. I'm actually a dual Swiss / U.S. citizen (silly parents) and I lived most of my life in Switzerland. My grandmother would be pissed if I renounced my Swiss citizenship which is mostly why I keep it, I think she'd prefer I renounce my U.S. citizenship and go to college in Switzerland instead.

Anyway, to my greater point. You can't use Switzerland as a model to say that we don't need regulations because the primary mark of violent crime (in particular gun crime) in developed countries is related to the Gini coefficient (measure of inequality), and the Swiss coefficient is much lower than ours. It's not even poverty levels that imply an abnormal violent gun crime rate, the biggest predictor is inequality. This is even further amplified when the inequality is driven along minority lines, be them race , religion , or something else (which is obviously true of the U.S. in the case of race). This was demonstrated compellingly by a study commissioned by the World Bank which followed the rates in relation to inequality from the 70s to mid 90s. Note, this only applied in developed countries or near-developed countries though since crime is high in many African nations yet inequality is very low (they are all poor etc.).

If you really want to solve gun violence , you need to just fix the massive inequality that exists in this country. That's much more difficult to do though, unfortunately.