Formulated especially for bench rest shooters. Removes copper fouling overnight. Powerful, safe and fast. Contains no abrasives. Also great for removing powder, lead and plastic foulings from all rifles, shotguns and handguns. FeaturesAllows you to clean your bore overnight, not in 3 or 4 days.Powerful, safe, fast and contains no abrasives.Also great for removing powder, lead and plastic fouling from all rifles, shotguns, handguns and revolvers.