Bore cleaning paste made in the USA! Highly effective concentrated paste formula that lasts longer and takes less time to clean with than ordinary liquid or aerosol type cleaners. Because it is a paste it cannot spill or run into wood stocks, grips or mechanisms causing chemical damage. Removes copper, lead, powder fouling, plastic wad residue, and surface rust. It is non-corrosive, non-flammable and has no offensive odors or mists.