Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL)

I originally bought this to address some surface rust on a Ruger 10/22 barrel. The barrel wasn't damaged beyond saving, but it had enough rust speckling that I was trying to decide whether it could be restored or if replacement was the better option. I'm glad I tried Oxpho-Blue first. I'll be the first to admit that refinishing metal isn't my strongest DIY skill, so I wasn't expecting professional results. What surprised me most was how forgiving and easy the product was to use. After removing the rust and prepping the surface, I applied roughly six coats. The solution went on evenly, blended well between applications, and gradually built up a finish that looked far better than I expected. The end result wasn't identical to a factory hot-blued finish, but it was close enough that the barrel went from looking neglected to looking presentable again. From a practical standpoint, it completely saved me from having to replace the barrel. A few things I liked: easy application process even color development good results without specialized equipment effective for touch-ups and restoration work affordable compared to replacing parts It's important to keep expectations realistic. Cold bluing is not the same as a factory blued finish, and I wouldn't expect it to match the durability of a professionally applied coating. But that's also not really the point. For me, this product filled the gap between: doing nothing and living with rust replacing an otherwise serviceable part paying for professional refinishing If you have a firearm with light surface rust, worn bluing, or cosmetic damage, this is an inexpensive and surprisingly effective option to try before moving on to more drastic and expensive solutions. In my case, it exceeded expectations and gave new life to a barrel that I was seriously considering replacing.

Works great

Works great, very durable

The product work good. I touched up a few areas of my carry pistol that the holster had warn through the bluing. Not an exact match but it looks better.

Excellent for touchups and help in making your blue look better.

Very easy to work with and really restored my rifle to new.. Simply remove the rust with a 400 grit emory paper, wipe clean with a cleaner (like alcohol) before applied the bluing Solution, let it then dry for a minute and burnish with a #0 steel wool. Repeat the process if necessary, I applied it 3 times minimum. At end apply CLP mil spec to seal the newly applied area.

I’m very pleased with this cold bluing solution. I used it on a tool post nut and handle I machined for my lathe. It took me about 20 mins all together to get the result I was after. Just be patient and burnish as instructed. I was more than pleased with the results after prepping the parts with brake cleaner.

This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone or alcohol. Also, I got a better result by using a wire brush vs recommended #0 steel wool after bluing. The black coating is basically also a type of rust and it is porous and to prevent regular rusting you need to apply any oil or wax as a rust inhibitors after bluing which will be absorbed and retained by the black coating creating a barrier for regular rust.

Good product

Este producto es para pavonar. Es muy bueno en la mayoria de los aceros comerciales. Para obtener un buen acabado hay que dar varias manos: entre 8 y 10.

Worked like a charm, had an 870 magnum express receiver that needed some touchups, this covered everything up to near factory look!

Worked great, very simple to use for touch ups. Great price

Good bluing solvent for some parts.