Birchwood Casey Spanish Perma Blue Liquid Gun Blue 3 fl oz (90 ml)

Touch up scratches or reblue most steel firearms to achieve a uniform blue-black finish; not suitable for stainless or non-ferrous metals.

Fast-acting liquid formula that darkens quickly on thoroughly cleaned, rust-free metal; paste formula darkens slower but builds a denser finish.

Top-grade formula manufactured to industry standards for consistent, professional-quality results.

Trusted firearms care brand since 1948, relied on by shooters, collectors, and gunsmiths.

Will not blue stainless steel, aluminum, or other non-ferrous metals; intended for use on steel only.

Easy application with swabs (Q-Tips); no heat required for the bluing process.

Comes in a convenient 3 fl oz (90 ml) bottle suitable for touch-ups and small reblueing projects.

Ideal for both spot repairs and complete reblueing when surfaces are properly cleaned and free of rust.

Manufacturer part number BC-13187; made in the USA; see manufacturer for warranty details.