Brownell Formula 44/40 Instant Gun Blue

This product flat works. Best I've found.

Excellent. I used it to age some brass on a flintlock rifle and it worked perfectly.

This is a good product for small touch ups…not good for larger areas in my experience. I build 1911 pistols as a hobby and find this works well for areas I’ve filed to fit. For larger areas the Creme version is much preferred.

from what i had seen online from ppl using stuff like this, not this very brand just a solution to black metal, had trouble getting the parts to come out all the same, one would be covered an the next would be blotchy so i didnt know what to expect. when i cut the foil seal off the tip of my blade was blade when i pulled it back so i knew it worked but didnt see how well it worked til i brushed a little onto a toe clamp i had made an it really was instant an didnt take near as much as i expected. i didnt want to dunk the hole part in the solution so i was just brushing it on an this will be the method i use from now on unless i run across a large part or something but this stuff works really well an if ur looking to black some metal parts this works. buying it in small 2oz bottles is probably not the best way if u have alot of parts or large parts but i will be sticking with this brand.

This stuff reacts instantly and is very forgiving. I use alcohol or mineral spirits to prep metal surfaces on my blacksmithing projects and get great results from this. You don’t have to do multiple coats either to get good finishes. 1 bottle lasts a while and be sure to change your application instrument (swab or cotton ball) after each use or you can contaminate the fluid.

Good stuff

Excellent product. It’s the best I’ve found by far. If you take the trouble to degrease the metal, warm it slightly and apply this in long thin strokes, you can take a new, look in the white barrel and make it look just like it’s been blued. Great for touching up areas of worn off bluing. Tends to match the existing bluing quite nicely. I’ve used half a dozen different cold blues, this one’s the best I’ve found.

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