Lucas Oil Extreme Duty Gun Oil 1 oz - is a special blend of oil and petroleum-extracted additives producing a lubrication specially formulated for high volume, high heat and friction firearms.;Lucas Extreme Duty Gun Oil is designed for semi-auto rifles, shotguns and pistols as well as full auto firearms and suppressors. It offers superior burn-off resistance. Its polymeric film protects metal from rust, moisture and dramatically reduces wear during all shooting conditions. Superior blow back resistance, keeping oil out of your face and off your glasses; Protects metal parts from rust, wear and moisture during extreme conditions; Designed for weapons that experience high volume, full auto, and supressed fire; Provides maximum heat resistance;