Careful. That chart is "guns per person" as a mean, not literally how many people own a gun. In the US, for instance, only about a third of people own a gun, but because some people own private arsenals, the mean is skewed. I wouldn't be surprised if it's similar in those other countries. Steven Paddock had two-dozen guns just in the hotel room with him, and even more at his home.
I still wouldn't estimate that these could be that many weapons.
Our neighbour, a hunter, has like 5, and that is the only one I know with a legal weapon.
Can't find the statistic on the website that is sourced, but I've only ever seen such numbers in articles that talk about the twenty-something million illegal hand weapons that are supposed to be somewhere in Germany, without ever giving much evidence for them.
Officially, there are roughly 2.5 million people who are allowed to own the roughly 6 million legal hand weapons that are around - emphasis is on being allowed to OWN those weapons, as that does not mean that you're allowed to actually carry them - if I understand German law correctly, then to carry an actual hand weapon, you need the Waffenschein, of which there are a total of roughly ~20.000, with only 600 of those owned by private citizens. And while there certainly are some amount of illegal weapons in Germany, they're not likely to be carried around by private citizens. So the police really doesn't have much reason to expect to be attacked with a handgun if they're just dealing with normal citizens, and not gangs or something like that.
I've also found the 20 million illegal (German link
http://www.deutschlandfunkkultur.de...ine-waffen.976.de.html?dram:article_id=346481 ; still haven't figured out how to use links properly under xenforo...), but I don't believe that either. These criminal organizations must then have for each of their mobsters their own private military bunker. The 1/3rd is from one of the statistics in the graphic, at least also according to statista.de , but no time to check the credibility of that one.
Your numbers for the Waffenschein (permit to own weapons) again seem to be a bit low, because hunters also need one, and I'd estimate that these are more than that (but just a gut feeling). EDIT: Apparently we have roughly 400k hunters.
EDIT2: Permit to carry a weapon (in public) seems to be correct with that low number. The permit to own a weapon (for special usages like hunting or shooting sports) must be higher.
Maybe these numbers include private militaria collections, which normally contain non-functional weapons, mmmhh.
You're right for the last 2 sentences for sure.
EDIT: There might be some confusion with the counting to.
You e.g. need a weapon owning permit for the usage of crossbows, which might therefore fall into this statistic (although I don't think that's a considerable amount).
Normal bows would not fall into it (some semantics there; bows don't have a barrel, a crossbow has, therefore it's a firearm, something like that), but maybe they're counted?
Found again the number of 20 million illegal weapons, together with 10 million legal weapons, which require a permint, plus 15 million, which do not require a permit
https://www.welt.de/politik/article96595/Schusswaffen-in-Deutschland-Fragen-und-Antworten.html . With these numbers, I seriously doubt what is counted.
The link is a bit older. At that time, things like pepper spray would have been counted as weapon which does not require a permit, I think.
