If it gets wet, I try to dry it out real well in a warm place. It will definately cause some rust if the moisture stays under there, as it is hard to clean and oil underneath. But then it is just my old Mossberg. The tape certainly DOES NOT help prevent rust. If you are using it on a gun that you are worried about damaging the barrel, remove it after Turkey season and clean everything. I dont put it on the receiver, it's the barrel sticking out there that a turkey will see.