So how hard is it to own a gun in Germany?

With the public school shootings in Germany, it might be worth noting how hard it is to legally own a gun in that country.  New registration figures indicate that there are 1.4 million people who legally own guns in the country out of a population of 81.8 million people --- a 1.7 percent rate.  Of course, the illegal rate of gun ownership is presumably quite different.