Prevent your guns from rust & corrosion by placing them in a Rust Stopper Rust Prevention Storage Rifle/Shotgun Bag prior to storing for the season. These bags feature a zip top closure for ease of use and protect both ferrous & non-ferrous metals. When used properly, these bags will help stop rust on firearms for up to three years. Available in rifle/shotgun and pistol sizes, these bags are infused with ARMOR VCI (vapor corrosion inhibitor) Nanotechnology to stop rust.