Formula 44/40 Instant Gun Blue 2 oz

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Formula 44/40 Gun Blue is a cold bluing solution made famous by Brownells. Cold bluing had a bad reputation before 44/40 came along and showed how good it can be. Use this solution for touch up bluing on rub spots, rust spots, and any exposed carbon steel.




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Additional Information

Item Type:
Gun Cleaner
2 oz
Ships Internationally
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1 Review

  • 5
    44-40 bluing

    Posted by Timothy Ficklin on Feb 23rd 2021

    So far its the best cold blue I have found.

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