@Sirlach I can't really see anyone with that kind of cash needing an internship... especially one based in Denmark

My idea:

Co-design a custom pistol: $800
Co-design a custom SMG: $1,000
Co-design a custom assault rifle: $1,250
Co-design a custom sniper rifle/machinegun: $1,500

Yeah we're going slightly out of the realms of realism but if FC put the usual 80's realism restriction (e.g. you can't make a custom G11 sorry, but customized M14 is all go), it might make for some interesting ideas.

Edit: in fact to save FC on some artwork labor it probably should be based off a gun they're going to have in game already