Birchwood Casey Presto Mag Gun Blue - 3 oz

Birchwood Casey Presto Mag Gun Blue is a cold blue formulation designed for firearms restoration and touch-up work on all steel surfaces, excluding stainless steel. This 3 oz bottle is ideal for gunsmiths, armorers, and shooters who need to perform complete reblue applications or targeted metal restoration on both vintage and modern firearms.

The cold blue process operates through a chemical reaction that oxidizes bare steel, forming a protective layer and developing a deep blue color. This method does not require heat, thus eliminating heat distortion and allowing for precision work on individual components such as barrels, receivers, and small parts. Proper surface preparation, including cleaning and degreasing, is essential for achieving an even color and consistent finish.

This product is particularly valuable for preserving original metallurgy while addressing issues like corrosion, light pitting, or worn finishes. Birchwood Casey's formulation is recognized as an industry standard for cold bluing applications, trusted for its consistent color matching and durability on firearm components.