A penetrating gun lube custom blended to have a lighter viscosity . UltraBlue® has a temp range of -100° to +725°. It will help control corrosion and reduce friction. Use after each cleaning. HANDGUNS Lightly coat auto slides and barrel bushings on revolvers. Lightly coat all metal-to-metal contact points. SHOTGUNS Coat hinge surfaces, choke tubes threads and all metal-to-metal surfaces. RIFLES Lightly coat bolt lugs, firing pints and metal-to-metal surfaces. BLACKPOWDER Lightly coat all moving parts, especially bolts and firing pin. We have eliminated short load syndrome and we make cleanup easy. Complete instructions comes with every package. CLASS 3 WEAPONS Lube all metal-to-metal surfaces. Weapon will run cooler giving added barrel life.