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

I found Brownell's Oxpho-Blue Professional Grade Cold Blue an excellent product. As noted in other reviews some surface prep of the intended surface to be blued may be required and heating the surface to receive the Oxpho-Blue seems to improve results. Please consider the following cautions before use: be mindful of having proper ventilation in your work area (this product does produce some fumes), use protective gloves (nitrile works), wear a particulate-blocking mask if sanding metal is required, beware of splatters and drippage on clothing and shoes (I learned the hard way), avoid getting the Oxpho-Blue down inside of the barrel, and take care not to allow the liquid drip or run onto unintended surfaces or parts. For this project I applied Oxpho-Blue to all the metal surfaces of a disassembled, late 1950's Mossberg 20 gauge (barrel, bolt, receiver, etc.). That shotgun had very light rusting of the surfaces with very, very minor surface pitting (which required a little light sanding). Patience and persistence in the prep and application pays off in the end. I cleaned and de-oiled all surfaces, used progressive grits of sandpaper (100-1500) and #0000 steel wool to bring the surfaces down to bare metal, and then heated the metal surfaces before application of the Oxpho-Blue. I heated the surfaces simply using my wife's hair dryer. I did try cold application on the bolt (no heat applied) and saw acceptable results. Still, heated surfaces seemed to produce bluing a bit better. I applied a total of about 8 coats using cotton balls dipped into the solution with a gloved hand. While Oxpho-Blue initially dries with a bit of a brown-tinged residue layer, using #0000 steel wool between each coat to lightly buff the surfaces removes the residue and allows the blue to come through. After I completed the bluing process I applied a light coating of gun oil to all surfaces. This was my second project using this product. I learned from both of these projects that taking my time paid off. I highly recommend Bownell's Oxpho-Blue Professional. It is superb for touch-up and I've had great success (so far) on entire rebluing projects. Best of luck on your projects!

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.

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.

I have a 1969 Marlin 1894 44 mag lever action rifle, that I accidentally ruined the finish on,had surface rust I tried using naval jelly rust removal it ate the bluing off my $2200 rifle made me sick,I bought this OXPHO BLUE followed instructions and my rifle looks brand new actually better than before I've put 30 coates on so far and it looks like a mirror,If you want to refinish a gun and make it look amazing and do it easy buy this stuff 💯 the best thing made for gun owners.

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.

Good product

I need more

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