Copper cutter is specially formulated to remove copper, lead, powder residue and plastic wad fouling from bore surfaces.Copper cutter is a water based ammonia enhanced product and it will remove all lubrication or oil protection.Always follow up with a slip 2000 gun lubricant to displace any moisture left behind from cleaning.This will not only protect your weapon but it will reduce your next cleanup time.Type: Bore CleanerSize: 4 ozQuantity: 1 BottleProtects: Against Copper Build UpSuitable For: All FirearmsHazair: Yes