Birchwood Casey Perma Blue Liquid Gun Blue (3 fl. oz) is the proven solution for touch-ups or complete rebluing of most steel firearm parts. Its fast-acting formula produces a uniform, non-streaky blue-black finish, ideal for restoring wear spots, blending polished areas, or reconditioning entire surfaces. Designed for shop or at-home use, Perma Blue delivers professional-looking results when applied to properly cleaned and degreased steel.

Note: Intended for most carbon/alloy steel parts; not for stainless steel, aluminum or non-ferrous metals.

Highlights

• Fast-acting liquid for even, blue-black finish

• Great for touch-ups or full reblue jobs

• Consistent, non-streaky appearance with proper prep

• 3 fl. oz (89 ml) bottle — compact and workshop-ready

Safety/Use notes (high level): Use gloves/eye protection, ensure ventilation, and follow manufacturer directions. Store away from heat and children.