I.E. make it so that instead of the weapon list in gear pool saying "vn_m14,vn_m16", I could make it say "(vn_m14 + mag_m14), (vn_m16+vn_4x_m16)"

Or add gas cans to the trunks of vehicles? I want it so that when a player finds gear, it's ready to go. The more weapons you add, the more oversaturation of mag types there are, and thus, if you have more than, say 8 unique mag types, it becomes near impossible to find magazines compatible with their weapon. Realistically in an early apocalypse scenario, if a player finds an M4 in some military armory, they're gonna find some ammo with it as well.