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 Blackhawk Knoxx AR Pistol Grip – FDE Birchwood Casey Gun stock – Sealer and filler 3 oz bottle Redfield Scope Rings – Fits Weaver – Top Mount Bases – For objective lens diameters up to 40mm – Medium Matte 30mm – Part No. 47323 – VISM Rubberized Grip for AR Platforms – Part No. VG123