Birchwood Casey Perma Blue Liquid Gun Blue 13125

3 fl oz bottle Birchwood Casey offers you the best ways to touch up scratches and worn spots or even completely reblue most guns. It will give a non-streaky, even blue-black finish to steel (except stainless). Perma Blue Liquid Gun Blue provides great blueing to metal that has already been thoroughly cleaned and is free of rust. NOTE: PERMA BLUE Liquid Gun Blue will not blue stainless steel, aluminum or non-ferrous metals.