Hoppe's No. 9 Synthetic Blend Gun Bore Cleaner, 32-Ounce 9 synthetic blend bore Cleaner is especially designed for the modern firearm Superior removal of carbon Biodegradable/non-flammable Superior removal of carbon, lead and copper fouling Safe on anodized aluminum, titanium, steel, chrome, nickel, plastic, polycarbonate and rubber Same great traditional Hoppe's 9 smell Biodegradable/Non-flammable Made in the USA