Things your Range Bag should include

Staple gun / staples

Tool kit ( Allen heads, torqes, punch set, pliers, small & medium flat head & philips screw drivers, a small pocket knife, small hammer )

Eye protection

Ear Protection

First aid kit / Trauma kit / Tourniquet

Gun oil / lubrication

Cleaning kit that includes a cleaning rod that is at a minimum the length of the barrel of whatever you are shooting

Extra batteries for optics and ear protection