A gun cleaner is a chemical substance or mechanical device designed to remove fouling, lead, copper, and other undesirable elements from firearms.
Gun cleaners can be used to clean the barrel, chamber, and other parts of a firearm. They are available in a variety of forms, including liquids, gels, pastes, and wipes. Gun cleaners typically contain solvents, detergents, and other chemicals that help to dissolve and remove fouling. Some gun cleaners also contain lubricants that help to protect the firearm from wear and tear.