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 VISM Rubberized Grip for AR Platforms – Part No. VG123 Canik – Barrel – Fits TP9 Elite Comaat; TP9 SF Elite; METE SF; METE SF PRO – LUTH-AR The Chubby Grip – AR Pistol Grip Part No. 710 AR15/AR10 Brass Catcher