I would keep them in there, no harm in having them. I'm assuming that the kit isn't just for the shooting range, and could be part of this guys bug-out/in system.

The same could be said about the inhaler. If you let someone else use it is that a huge liability? Yep. is it illegal? Yep. Have I ever done that? Yep. (knew the guy personally and knew he had asthma, not something I would do for average Joe, that's what ambulances are for) For that matter carrying a gun is like walking around with a lawsuit if used incorrectly, sometimes even when used correctly, but it could save someone's life. Risk vs. Reward and common sense play big parts here.