A lot of Americans think that no one can own guns in other countries. It’s simply not true. There are nearly 40 countries that have some type of “must issue” permit system or constitutional protections allowing legal residents and citizens to own firearms. In most of these countries, it’s difficult or impossible to get a concealed carry permit, but having a home defense weapon isn’t out of the realm of possibility.
Check out this list on Wikipedia for more details.
Overview of gun laws by nation