Super Blue Extra Strength Gun Blue is the blackest blue. Use caution to confine the solution to the area to be re-blued, as it will have an effect on the existing blue. - Super Blue Extra Strength Gun Blue is the blackest blue.
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Double strength Super Blue liquid gun blue from Birchwood Casey gives a blacker darker blue finish for the reblueing and touching up of most guns. Suitable for highly polished and hardened steels Giving a non streaky fast acting uniform blacker-blue finish.
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Suitable for highly polished and hardened steels Giving a non streaky fast acting uniform blacker-blue finish. - Genuine Birchwood Casey product. - fast acting non streaky uniform finish. - Double strength formula.
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