Lucas Oil Extreme Duty CLP is designed to clean"" lubricate and protect your firearms in one simple step. It contains high grade additives that dissolve powder residue"" old lubrication and other contaminates. It penetrates deep into rust to help clean neglected firearms and free rusted parts and actions. Extreme Duty CLP's superior anti-wear additives reduce friction and wear while the unique waterproof"" super slick film resists blow out and extends firearm life and runtime.