Bore Tech's Shield Rust Preventative and Corrosion Preventative is an exceptional long-term rust and corrosion preventative formulated to protect your firearms from extreme weather conditions and corrosive environments. It is Non-Oily, Non- Greasy Formula, Moisture Displacing, Excellent For Long Term Storage, and Safe For All Metals. Made with a formula specially designed for firearms and contains over 5X more rust/corrosion protection than the competition and easily surpasses 500 hours in ASTM humidity testing and 100 hours in ASTM salt spray testing. Safe for use on all metals, Shield deposits a dry, non-oily, non-gumming, non-accuracy affecting, invisible barrier that will leave your valuable firearms completely protected. Unlike typical rust preventatives that leave a messy, wet, oily film behind, Shield penetrates deep into the metal's pores displacing moisture and neutralizing corrosive byproducts then seals the surface from its environment with a semi-dry film tha...