What's this Vorratskasten 15 n. A

[tankgewehr]

Hello

I'm find this wood box but i could'nt say that for what material.
It's for luftwaffe because the reference is Fl.
What you can think ?
For the MG 15 ?
Thanks for your answers.
Tankgewehr

[tom wy]

mg 15 spare parts probavly but not sure-> it would make sense