Removes the dirt and grime on your firearms and protects them for up to a year! NEW mono-molecular sized rust inhibitors can penetrate areas even fine oils can’t reach. Maximize the performance of your firearms: lubricates, removes dirt, seals bare metal surfaces, fast drying, no CFCs or 111 Trichlors, non-sticky, non-conductive long lasting protection. Bull Frog Rusthunter Firearms Cleaner and Rust Blocker contains metal-seeking VpCls that seal and protect metals with a self-repairing ‘Molecular Umbrella’. This ‘Molecular Umbrella’ seals metals against the air and moisture that cause rust and corrosion.