Used and recommended by major firearms manufacturers, Lucas Extreme Duty Gun Oil is specially formulated for high volume, high heat and friction firearms and was designed for full auto firearms, SBRs and suppressors as well as semi-auto rifles, shotguns and pistols. Used and recommended by major firearms manufacturers, Lucas Extreme Duty Gun Grease is a premium, heavy duty firearm grease formulated with a unique additive system designed to provide maximum lubrication under the most severe operating conditions.