Home / AR's / Birchwood Casey Perma Blue – Liquid Gun Bluing – 3 oz bottle Birchwood Casey Perma Blue – Liquid Gun Bluing – 3 oz bottle Category: AR's Product ID: 12416 Description Description Birchwood Casey Perma Blue – Liquid Gun Bluing – 3 oz bottle Related products Birchwood Casey Cleaner-Degreaser – 3 oz bottle Redfield Scope Rings – Fits Weaver – Top Mount Bases – For objective lens diameters up to 40mm – Medium Matte 30mm – Part No. 47323 – ERGO 2 AR15/AR10 Grip Kit Suregrip ambi camo imperial Redfield Scope Rings – Fits Weaver – Top Mount Bases – For objective lens diameters up to 40mm – Medium Matte 1″ – Part No. 47312 –