Keep your firearm clean and ready for use with Hoppes Number 9 Gun Bore Cleaner, 5-fl-oz Bottle. It’s the most universally used solvent for removing primer, powder, lead and metal fouling and preventing rust. Hoppes gun bore cleaner is quick, super-efficient, safe and easy to use. The unique formula flows freely and penetrates rapidly. It’s a favorite with sportsmen throughout the world. It leaves a rust-preventative coating behind and is safe for use with all rifles, pistols and shotguns.