Revitalize your firearm with Birchwood Casey Perma Blue Liquid Gun Blue or Paste Gun Blue. Whether you're touching up minor scratches or completely rebluing your gun, Birchwood Casey offers the ideal solution. Known for providing a smooth, non-streaky, blue-black finish to steel surfaces (excluding stainless), Perma Blue is the go-to choice for gun enthusiasts and professionals alike. The Perma Blue series includes both Liquid Gun Blue and Paste Gun Blue. The liquid version works quickly, offering immediate results, while the paste option takes a bit longer but builds a denser, more durable finish. Both products require the metal surface to be thoroughly cleaned and free from rust to achieve optimal results. Since 1948, Birchwood Casey has been a trusted name among serious shooters, collectors, and professional gunsmiths. Renowned for their innovative products and unwavering commitment to quality, Birchwood Casey continues to lead the industry in gun care solutions. Give your firearm the care it deserves with Birchwood Casey Perma Blue.