Since 1903, our original formula has been a go-to for hunters, competition shooters, and recreational shooters alike. Trusted for generations, Hoppe's No. 9 Gun Bore Cleaner is ideal for cleaning the bores of pistols, rifles, and shotguns. It penetrates deeply to remove carbon, powder, and lead fouling while loosening abrasive debris to protect your firearm from wear. The distinct Hoppe's No. 9 scent has become synonymous with firearm cleanliness, making it a staple in range bags and on gun benches for over a century.