Remington Shotgun Cleaner cleans trigger groups, choke tube threading, semi-auto gas ports, receivers and magazine tubes, chambers, and barrels. Dissolves powder residue, fouled lubricants, burnt carbon deposits, and gunk. Blasts away gummy caked on grime from hard to reach areas such as ejectors, firing pin assemblies, trigger components, and bolt recesses. Safe for polymers. 18-oz. aerosol can contains no CFC's or carcinogens. Remington offers high-quality gun maintenance products that are proven superior for cleaning, lubricating, and protecting fine firearms against corrosion and fouling over the long haul. Remington Gun Cleaning Products are designed to ensure smooth, reliable gun function in all weather conditions.