Western Powder Montana X-Treme Copper Cream - 6 oz For Stubborn Fouling Montana X-Treme Copper Cream is a liquid bore cleaner that quickly removes fouling including copper, lead, plastic wad residue, powder fouling and moly. Copper Cream makes quick work of barrels that are hard to clean and is non-embedding and non-abrasive to barrel metals. When used in combination with Copper Killer 50 B.M.G., Copper Cream helps speed new barrel break-in. Please see montanaxtreme.com for product use and cleaning suggestions. Note: Copper Cream does not contain protective oils like the Montana X-Treme solvents. Do Not leave Copper Cream in your barrel for an extended period of time and remove all residue with a saturated solvent patch. Manufacturer: Western Powder MFG Number: 07025 UPC: 658638334006