AR-15 rifle receiver finishes


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Slater
March 27, 2008, 04:24 PM
From Bushmaster's FAQ on their website:




After I've cleaned my rifle, how do I keep my new Bushmaster's finish looking new?

The surface finish of the Bushmaster rifle - all mil-spec hard anodize on the aluminum or manganese phosphate on the steel parts - is slightly textured or "matte finished" so that it won't reflect light - a military necessity. Here are a few tips on maintaining this matte finish. FIRST: USE ONLY BLACK RAGS on the outside of your rifle. Black t-shirts are great for this. A white or red rag or shop towel will rub into the matte textured surface and leave blotches. If this happens, use a Teflon based oil to remove blotches. There is a clear nickel acetate sealant applied over the anodizing and the steel parts in the rifle are also final finished in nickel acetate. Some solvents in gun cleaning solutions will attack nickel finishes, so read the label on your solvent to be sure you won't damage that surface finish. SECOND: Get a non-drying motor oil. Any non-drying motor oil will do, as long as it doesn't have additives that might attack the nickel acetate sealant that we apply as a final protective coating. Believe it or not, non-drying motor oil leaves a great looking finish.


I just finished cleaning my rifle and now I have blotches on the receivers.

We get this question often. The receivers on our XM-15 are bead blasted before anodizing, and that means they have a textured surface. Think of it like sandpaper, about 800 grit. If you rub a white cloth on a black piece of sandpaper, the cloth rubs off, leaving streaks or blotches. For a nice black sheen, use only black rags and a non-drying oil like motor oil. For a matte finish, use black rags and Rem-Oil or "Break Free" with CLP. Either way, black rags will give you the look you want.



Has anyone used motor oil on their AR to give it a surface shine? And what exactly is nickel acetate?

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strat81
March 27, 2008, 04:42 PM
Motor oil has additives in it that I don't want to handle with bare skin.

I stick with CLP on the exterior.

mc223
March 27, 2008, 04:48 PM
Rem Oil spray fits the Bushy description for external protection. It works better than CLP on the outside.

Mr White
March 27, 2008, 05:11 PM
My AR gets blotches on it too when I clean it. It doesn't affect how it shoots so I don't worry about it.

GunDoctor
March 27, 2008, 11:40 PM
CLP or Rem Oil fit the bill quite well (like was said above).

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