The Birchwood Casey Muzzle Magic 77 Bore Solvent is a water-based solvent perfect for preventing rust and loss of accuracy from black powder fouling. It is safe for use with natural lubricants. The cleaner effectively dissolves powder residue and loosens any metal traces for easy removal. After cleaning a muzzleloader, barricade rust protection can be applied to all metal parts to protect from rust. FeaturesPrevent rust and fouling from black powder muzzleloadersFlip top for no spill cleaningDissolves powder residue fastWater-based solvent