Birchwood Casey Perma Blue Liquid Gun Blue 3oz.

Birchwood Casey Perma Blue Liquid Gun Blue offers a fast, reliable way to touch up worn spots and scratches or fully reblue steel firearm surfaces at home. Birchwood Casey offers you the best ways to touch up scratches and worn spots or even completely re-blue most guns, giving a non-streaky, even blue-black finish to steel (except stainless) . Compared to the paste formula, this liquid version works faster, since Perma Blue Paste Gun Blue is slower to darken than Liquid Gun Blue, but will build up a denser finish , making the liquid the better choice when speed matters more than a thick, built-up finish. For best results, apply to metal that has already been thoroughly cleaned and is free of rust, as both Perma Blue Liquid Gun Blue and Paste Gun Blue provide great bluing to metal that has already been thoroughly cleaned and is free of rust . Keep in mind this formula is intended for carbon steel only — Perma Blue Liquid Gun Blue will not blue stainless steel, aluminum or non-ferrous metals — and it comes packaged in a convenient 3 fl. oz. plastic bottle for easy application during touch-up jobs or full refinishing projects.