Black bluing

[Maverick22]

Hello,

Soon I will be cutting the front sight post down on my Norinco Ar15 to make a low profile gas block (the taper pins are NOT coming out) and am looking into cold bluing the exposed metal to protect it. Are there any products you would recommend which would come out black? I really like the results of Kleen-Bore Black Magic that I have seen online, however I haven't been able to find any Canadian sellers. Amazon has it, but $50 seems like an awful lot.

Thanks for any suggestions!

 

[gunpro]

seeing as how the Norinco AR15 isn't blued to begin with, save yourself the hassle of blueing and get a touch up pen blue, or black, matte or gloss and touch up the affected area of your cut down. Have you considered drilling the pins out? Another option is flat black spray paint to do the block, or get the entire rifle done in something like KG GunKote?

 

[jackrabbit000]

seeing as how the Norinco AR15 isn't blued to begin with, save yourself the hassle of blueing and get a touch up pen blue, or black, matte or gloss and touch up the affected area of your cut down. Have you considered drilling the pins out? Another option is flat black spray paint to do the block, or get the entire rifle done in something like KG GunKote?

I bought the Birchwood Casey touchup pens in matte and gloss black. It's a joke, these are just paint pens. A felt pen does the same job.

 

[Maverick22]

Thanks for the suggestions. I think I'm going to use some black heat resistant spray paint. The bbq kind. Should hold up to the heat of the gas block

 

[JonMtl]

Just get a black sharpie pen... Optionally you could armacoat the whole thing, it would look ACE.

 

[BCRider]

Thanks for the suggestions. I think I'm going to use some black heat resistant spray paint. The bbq kind. Should hold up to the heat of the gas block

It'll also wash away the first time you use any gun cleaning solvent on it.

I've tried out three different cold blues now. Of the three the best has proven to be the G96 bluing creme/gel. It provides a near total black finish with only one application. And if you want it totally black you apply once, then rinse and lightly "card" it with a small wad of 0000 steel wool then apply a second application. The results will be as black as you could hope for.

The key to making it work though is to degrease the area really well. Acetone, lacquer thinner or brake cleaner are the solvents of choice. And don't clean it only once. Clean it at least twice with fresh paper towel to remove every last trace. Also if applying two bluing creme treatments clean with the solvent after carding off the loose black with the steel wool. The wool has some oil on it to prevent rusting in the package.

Keep in mind that bluing or blackening by itself does not avoid rusting. Instead it serves as a porous finish that holds oil better and it's the oil that prevents the rust from occuring. So you still need to oil the guns before putting them away.