Some of Rust Blue's unique features...



Rust bluing steel produces the highest quality, best appearing, and most durable finish known.


Rust blue is the authentic black iron oxide finish used by professional gun makers.


Proven formulas that can accurately reproduce the correct finish on your collectible firearm.


Each order is freshly weighed, mixed, and promptly shipped; resulting in the most potent product possible.
The Authentic Bluing Solution

Rust Blue American

Modified formula omitting mercury salts as a component. It still produces a fine blue as seen on US Krags plus early Springfields and 1917 Enfield’s. This formula does not require neutralization to prevent after-rusting. Complete working instructions included.

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What people think of Rust Blue...

That barrel brake came out beautiful! Dark and deep! Thank you!
star Dennis Henthorne Rust Blue Customer
I can’t believe that old gun came out so well. I had written it off! Rust Blue was easy to apply and the directions were spot on. Thanks for a great product.
star Terry Watford Rust Blue Customer
That blue is the deepest color I have ever seen! It was so easy. Great product.
star Ronnie Hill Rust Blue Customer
The steam pipe is the ticket for an inexpensive way to convert the rust to rust blue. It only took three passes!
star Terry Watford Rust Blue Customer
From The Rust Blue Blog

How to Make a Sweat Box

A “sweat box” is used in rust bluing for two reasons: 1. To initiate and accelerate the rusting process 2. To create a consistent, reproducible humidity environment Rust bluing can become agony for some who do not live in a high humidity environment, or if the season of the year is dry and cool. By [...]

Hello antique gun enthusiasts!

Welcome to Rust Blue — the Authentic Bluing Solution connection! For over forty years I have been restoring and re-conditioning collectible firearms. As a gunsmith and collector, I always appreciated the beautiful and durable satin blue that  rust blueing formulas gave those fine old guns. Different manufacturers used various formulas over the years to achieve [...]

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