Brass Catcher!!!
It’s good idea.
Catcher is a good asistant if you are a gun man. I experienced it when I was a soldier looool.
Anyway, this is cool.
Here some pics.
↑ makeshift catcher loooooool
On a related note, certain weapons, like the double-barreled shotgun, and most revolvers, are bugged in this respect:
They eject their cases when fired, rather than when reloaded.
A fix may or may not be forthcoming. 
While this is rather random, I see Korean in the first pic