Re: Wasn't stupid.
you can't deny gun availability corollation with gun crime!
Ah well, define availability.
If "availability" means you can walk into a shop and buy a gun with a cursory background check (or even skip that for personal sales) with no registration of firearms then clearly that's open to abuse (as in much of the US).
If "availability" is referring to the range of firearms that a law-abiding person can own in a country with some sort of meaningful licensing (e.g. all of Europe), then no - whether you take a UK approach (shotguns, some rifles, no pistols) or a Czech approach (everything including machine guns - with the right paperwork) makes literally no difference to violent crime (the Czech Republic has half the homicide rate of the UK despite much higher per capita firearms ownership. Similarly Germany has a comparable rate of homicide to the UK despite gun ownership running 3x higher).