Birchwood Casey RIG Universal Gun Grease 40027 penetrates almost all metal surfaces and creates an impenetrable barrier against rust and corrosion, protecting your equipment even during storage. Birchwood Casey RIG Gun Grease 3oz Plastic Jar is a great cleaning kit for protecting your weapons, be they shotguns, muzzleloaders, handguns, or rifles. One treatment from the Birchwood Casey RIG Universal Firearm Grease, and your weapons will be protected for a long time to come.