Abstract: An anti-corrosive sacrificial anodal attachment is provided for substantially reducing corrosion of gun barrels, breeches, internal mechanisms, and any other functional or decorative iron based member of a firearm. The attachment is comprised of a plurality of rib-like sacrificial anodes made of a material more active in the galvanic series than iron. The ribs are mounted on a flexible strip having velcro fasteners on both sides. The velcro fasteners are disposed in such fashion that the anodes may be wrapped in surface engaging contact with a gun barrel, and the velcro fasteners engage one another to maintain the anodes in close engagement with the surface of the gun barrel, thereby providing cathodic protection for the barrel. In other embodiments, a biased wire spring or small magnets embedded in the rib are used to maintain the ribs in engaging contact with the surface of the firearm.