Bore Tech BTCP12008: Bore Techs Shield XP Rust Preventative is a state-of-the-art blend specifically formulated to protect your firearms from rust and corrosion. Shield XP penetrates deep into metal surfaces, displaces moisture and neutralizes corrosives. Then it seals the surface with a fast drying film that will not attract sand, dust, dirt or debris. No more messy, oily firearms staining your gun safe.