Birchwood Casey Perma Blue provides a reliable solution for touching up scratches, worn spots, or completely rebluing most guns. Designed for use on steel (excluding stainless), it delivers a smooth, non-streaky, even blue-black finish. Available in both liquid and paste forms, the liquid formula acts quickly while the paste offers a slower, denser build-up. Ideal for restoring firearms after thorough cleaning and rust removal, Perma Blue is a trusted choice for maintaining your gun s appearance and performance. Product Specifications Brand: Birchwood Casey Product: Perma Blue Liquid Gun Blue / Paste Gun Blue Finish: Non-streaky, uniform blue-black For Use On: Steel (except stainless); not for stainless steel, aluminum, or non-ferrous metals Sizes Available: 3 oz, 32 oz Application: Touching up scratches, worn spots, or complete rebluing