Western Powders Montana X-Treme? Copper Killer
Western Powders Montana X-Treme? Copper Killer, Non-abrasive, industrial-strength solvent has the power to remove the toughest copper fouling from any gun. The secret is its specially formulated ammonia oil that is strong enough to vaporize the stubborn copper fouling but safe enough to leave in the bore for up to an hour. Does not contain acids, amines, or chlorides that can etch the rifling. Mfg: Western Powders SPECS: 20 fl. oz. (591 ml) bottle.