BLACK MAGIC BLUING SOLUTION 2OZ BOTTLEBlack Magic Gun Bluing Solution Superior formula - 2oz Bottle - Made in USA - Black Magic by KleenBore is a premier, high performance cold bluing solution, previously available only to gunsmiths, produces a deep, penetrating action to restoiously available only to gunsmiths, produces a deep, penetrating action to restore worn or scrre worn or scr