I like those!!!
Back in the day when wood paneling was “normal” a friend of mine who had some skill at carpentry finish work took a little time and fashioned a “door” from a section of his wood paneled wall. Magnetic closure and a “push and pop” mechanical device. It netted him a very nice and convenient “wall safe” for a few $$ and some labor.
Man do I like that flag compartment for weapons. I wouldn’t leave them inside when I am gone but I would use that for when I am home and nearby, like when watching TV during the evening. Might just check this out. Plus the flag gives me a Patriotic feeling even if its empty.