Birchwood Casey perma blue gun blue is designed for restoring and enhancing the appearance of firearms. It is perfect for addressing scratches and worn areas or for a complete reblue of steel surfaces, though it is not suitable for stainless steel. The product is available in liquid and paste forms. The liquid formulation provides quick results, while the paste version requires more time to darken but results in a denser, more durable finish. For optimal results, ensure that metal surfaces are thoroughly cleaned and free of rust before application. This product allows you to achieve a professional-grade touch-up at home. This product effectively touches up or completely reblues most firearms, effortlessly restoring their finish The liquid provides a quick-drying, even blue-black finish that improves the look of your firearm without leaving streaks