That was an interesting read and accurate from everything I have read about WW-II in Germany. German made guns were reliable exports.
The SIMSON family was forced to give up control in 1938 (
https://en.wikipedia.org/wiki/Simson) because they were a Jewish family. The company made all kinds of war weapons, cars, BMW motorcycles, bicycles and street cars.
The German Gun Law banned Jewish gun merchants in 1938.
I would say that the average German had easy access to rifles and shotguns, but probably not pistols.