Firearms recovered from salt/brackish water should be coated with what?

• A. Gun grease or gun oil
• B. Soap and water
• C. Mineral oil
• D. Alcohol

Answer: (A)

Exposure to saltwater speeds up corrosion, so the first goal after recovery is to displace moisture and create a protective barrier on the metal. Gun grease or gun oil is specifically designed for firearms: it clings to metal surfaces, provides lubrication, and forms a film that blocks salt, moisture, and oxygen from reaching the steel. This makes it the most effective coating for preventing rust during handling, drying, and storage. Soap and water only cleans and doesn’t protect against corrosion; mineral oil has some moisture-displacing properties but isn’t as robust or long-lasting on a firearm surface; alcohol evaporates quickly and can remove protective films, leaving metal more vulnerable. So applying gun grease or gun oil is the best practice for firearms recovered from salt/brackish water.