Perma Blue Liquid Gun Blue Finishing All-Inclusive Easy-to-Use Kit for Gun Cleaning, Maintenance and Preservation

Very happy with the results using this to restore and reblue an old 10-22 barrel. The finish came out looking factory new. The process is easy, but involved. It takes a lot of prep work, sanding, and scrubbing off the old finish and any rust. Then spreading on the bluing, quickly rinsing your part off, more scrubbing, rinsing, and reaplying. It took me about 5 coats of the bluing to get a factory-like finish. What really made the difference was very lightly polishing the barrel after each coat with the supplied steel wool. In the end, my barrel shines like a mirror with a great blue finish. I would not hesitate to use this again. I will just have to wait and see how it holds up, and will update as necessary.

I recently used the Birchwood Casey Perma Blue Liquid Gun Blue, and it exceeded my expectations. Here’s my detailed review: Pros: - Easy to Use: The application process is straightforward, even for someone without much experience. The instructions are clear, and the whole process from cleaning to bluing took about an hour. - Excellent Results: The finish is deep, rich, and uniform. It gave my firearm a professional-looking blue-black finish that significantly enhanced its appearance. The coverage is smooth, with no streaks or blotches. - Durability: After applying the Perma Blue, I noticed that the finish is quite durable. It stands up well to handling and use, showing no signs of wear or chipping after several weeks of use. - Cost-Effective: This product offers great value for the price. A little goes a long way, and I was able to complete the bluing of an entire rifle with plenty left over for future touch-ups or other projects. - Versatility: While it’s designed for firearms, the Perma Blue can also be used on other metal items that need a durable, attractive finish. I’ve used it on some old tools and knife blades with equally good results. Cons: - Strong Odor: The only minor downside is the strong chemical smell during application. It’s important to use it in a well-ventilated area or outdoors to avoid inhaling fumes. Conclusion: Birchwood Casey Perma Blue Liquid Gun Blue is an outstanding product that delivers professional-quality results at a fraction of the cost. Its ease of use, excellent finish, and durability make it a top choice for anyone looking to blue their firearms or other metal items. Overall, I rate this product 5 stars. It’s a must-have for anyone needing a reliable and effective bluing solution.

My handgun had developed significant scratches from years of concealed carry, regular use, and transport. After researching options, I found that stripping and reapplying the bluing was the right solution—and this kit delivered exactly what I needed. It includes three bottles: a cleaner/degreaser, a bluing remover, and the permanent blueing solution. All worked flawlessly. After completing the process, I applied a light coat of gun oil, which brought out a deep, rich shine that looks better than factory-new. If you’re looking to refinish your firearm, look no further. The instructions are clear and easy to follow—even for a first-timer. And if you make a mistake? No stress. The process is completely reversible at any point by returning to step one. You simply strip and start again. This kit makes it practically foolproof. I couldn’t be happier with the results.

The swabs are awful for working on large pieces if you're wanting an even blue finish, so if you are blueing blades, I suggest you have a puffy microfiber towel used for automotive maintenance instead of the little swabs, because this blue chemical acts real fast, meaning you want to apply it all at once which isn't really possible. In general, I thought the instructions complicated some steps while not being descriptive enough on other steps. I ended up watching people use this stuff on YouTube to get a better idea how it works since I never used it before. Despite nearly getting a disastrously uneven finish on my Musashi katana, I think the results are rather beautiful and achieved close enough to my goal of making my sword become blue, as it is blue depending on the light angle and intensity. I don't feel the need to upload a ton of pictures of my sword and bushcraft knives, but I upload one image of my sword to show you, which is after I used metallic markers and sword oil to coat the blade. I know some people find it taboo to treat the handle section but I really don't care about letting my handle rust in order to prove its age, so that too was blued, colored, and very lightly oiled. My knives are made by Marttiini and Morakniv, and Birchwood Casey only works on stainable high carbon steel, but I did try some on my stainless steel knives just to see but nothing happened. The blueing is way better than using vinegar patina because the vinegar patina rubs off with little use, although this blue stain will do the same over use of course as you wear down the steel, but the blue holds on much longer. I didn't try blueing a pre-existing mustard pattern so I can't comment if overlapping will remove underlying designs. The chemicals seemed to work good enough but I wasn't really that impressed with them, especially considering how expensive this stuff is, but it was the only practical option I could find for cold blueing. So take note sword owners, be sure you thoroughly clean your blade with degreasers and distilled water (my shower has a water filter so you don't really need distilled for cleaning, but I used a distilled water bath as a bath stop using the shipping box and a plastic painter's tarp) and get your self a puffy fluffy towel to apply the blue in one big fast sweep across your sword. I had some sections of my sword not blue as fast, with a few stubborn spots, so I had to sweep, sweep, and scrub a few minor points. I ended up being happy with the end result though as my sword has an even enough finish. The angle in my picture shows a blue hamon and blackish side and spine, but light from the other angle makes the hamon look reddish and the blade as blueish. Overall, it's a bit like a combining a brown base with a chromatic spectrum reflection, but it tends to show enough of blues and teals for my liking. It's a nice blue patina that looks very appropriate on a sword.

Good product

I found a gun, it is 100 years old, it had been stored in a closet for more than 50 years untouched. It actually had more staining than rust, however once cleaned and left to dry out it began to rust terribly. I opted for this product. 1) I’m not an armorer, but with ease I was able to take the gun completely apart. This began the cleaning phase, my effort was of course to physically clean the gun, 3 days later I opened the cleaner and began the process of removing all the oils from me, easy task, no issues, everything went perfectly. 2) Now we begin removing the original blueing and any rust that was left. Okay I had watched a video, and with all the reviews cleanliness is the most important thing. This product worked amazing with a rag I basically just wiped the gun chrome, of course I used steel wool, with little effort, I could now see the original metal, and was about to work the tough spots and any dings I could find. Two days later, all the way through 1200 grit sandpaper and the green buffing compound and an industrial buffing wheel I could see myself perfectly in all of the metal, funny but everyone who saw it thought it looked beautiful chrome. 3) Reblueing-arrrrrr! Coat and little to nothing, reclean, steel wool, blueing, 6 coats later I’m on the Internet trying to get any advice on why this is not working, along comes Bubba44mag who says that the most important thing about re-blueing is heat. This is not in the instructions and like stain turns out to be important. Bubba said place the metal in the oven heat to 350f and this will be amazing more consistent etc, well I try not to place things in the oven, so I went to the gas log turned it on and hung up all the pieces for 2 days, to get heat through the metal, instantly fixed everything, 1 coat and the barrel looked brand new, not only the color but the blueing this time was perfectly smooth, so I rehung it to dry, cleaned again and ran another coat, beautiful, then rehung everything. 4) My experience with guns has always revolved around working the tool, while a professional gunsmith takes care of the details, obviously we have to be able to communicate. When the guns go to a place where maintenance may suffer there are rules, and the most important rule is cleanliness number 2 is blueing funny but this was part of my job, and these people just taught me why. In the words of a great man, SFC Keyes oil and heat condition the metals not on the outside but through the metal, so I used the oil wipe that came in this kit, along with the fireplace, now imagine the barrel is so shiny black, I wanted to send a picture to a friend, and when I touched the barrel it was dry, so I rewiped it and started pushing the oil into the barrel, I’ve now decided that this step should take a couple of days. Have fun!

Does the job. Restored an old LA Western Six Shooter .22lr. Looks really good. Comes with bluing remover to let you strip down to bare metal and start fresh. Very happy with product.

It’s okay. Wish I’d sprung for a kit with a little kore quality, but I used Birchwood Casey bluing kits all the time 20 years ago and back then it was a superior product. I’m bluing a brand-new hexagonal .50 cal blackpowder rifle barrel made of high-carbon steel. Something has changed with this kit… this isn’t the same kit I used a few years ago. The chemicals don’t seem to be as strong, and it took way too many applications to get close to the blue I wanted, and it’s still not quite dark enough. Back in the day, 8-10 applications of BC’s bluing agent turned high-carbon barrels a deep blue-black. Not anymore. Shame, because I appreciate USA-made products. But I’ll be researching and speaking with the gun guys at the shop, seeking a better product than this. It almost did the job, and the instructions are clear (full of typos but legible) and the included non-chemical components were adequate for the job. I’d pay more for a stronger, more effective product.

Product worked well

Buen producto y entrega rapido

Ya lo avía usado antes es bueno

Un kit parfait ! Mais mon acier etait stainless. Meme la il a noirci un peu.

Good product, does the job, used to blue axe heads!! Would of gave 5stars, but delivered I day late!