Krieghoff Gun Pro Oil cleans, lubricates, protects against corrosion, penetrates, removes smears, is non-gumming, and neutralizes acids from hands. Gun Pro Oil is to be used for continuous care of internal and external gun parts, locks, barrels and stocks. It can also be used for care and cleaning of leather and lacquers. It is free of silicone and therefore does not hurt optics, such as scopes. 2 oz. Pump Spray Bottles.