In short
Waffenschrank bases what the app and the website say about this country on these 54 provisions from 7 legal instruments. Each one is listed here with the address of its official text, the version we read and the date it was last checked.
This is the app’s register of provisions for this country as it currently stands. It is not a complete collection of the country’s firearms law; it contains the provisions on which a deadline, a storage rule, a classification or a note in Waffenschrank is based. What they mean in practice is set out in the country profile; how and how often we read them is explained in How we check.