Used and recommended by major firearms manufacturers, Lucas Oil Extreme Duty Contact Cleaner's consistent high pressure spray contains a unique blend of solvents and cleaning agents designed to blast away powder residue, grease, oil and other debris from firearm actions, slides, barrels, and parts. Safe on your firearm's metal finishes and will not harm polymers subjected to incidental contact. This unique formula displaces water, great for when your firearm is caught out in a rainstorm while hunting. Its quick drying, zero residue properties make it ideal for final degreasing of firearms prior to bluing, parkerizing or spray finish applications.