Hoppe's No. 9 Bench Rest Copper Gun Bore Cleaner, 5 oz. Bottle Formulated especially for bench rest shooters Allows you to clean your bore overnight, not in 3 or 4 days Removes copper fouling overnight Copper fouling can be cleaned from the bore overnight, instead of the standard 3 to 4 days Safe, effective and contains no abrasives Great for removing powder, lead and plastic from all firearms Includes one 5 oz. bottle