Well, I spoke with Chris, the engineer at CLP/ Safariland. He advises that to meet environmental requirements from some states (Coughcaliforniacough) thye had to reformulate the product a little time back. It is a VERY strong solvent, and will react with most plastics and rubbers- so O rings, plastic gun parts, stock finishes, rubber grips etc are not really compatible- as are powder finishes of any type. Anodized aluminum is more durable, BUT the product is really made for STEEL firearms. Bottom line? I would not try it.