Is this rust or is the bluing partially gone?

I agree with c3. Probably would not be too hard to clean it up. You could also use a cold blue to touch it up.

 

Not sure what kind of rifle that is from the limited pics. Is that a nylon 66 by any chance? If it is something valuable I would be careful about refinishing it.

 

I have done some of mine with Birchwood Casey's Cold Blue. It doesnt make them look new again. But it is a pretty major improvment. Might be something to play around with.

 

Yes it's sold by Brownells and also MidwayUSA has it.. Another good cold blue to look at will be Brownells OWN brand Oxpho Blue. Good stuff and leaves a good dark finish. A ball park price for reblueing your firearms is gonna run around $200 per firearm or higher. That's for a hot blue job. Just something to consider..

 

one other thing to try before trying the bluing method is some very fine steel wool and Kano Kroil. i did several of my fathers firearms with it, that had been in his gun safe for over fifteen years and had some rusting to them. they are not perfect, but look way better than before.

 

you seem to misunderstood what i was saying. the steel wool and Kroil will help you keep and preserve the blueing and remove the rust.

 

okay, try the Kano Kroil. worst case is it won't be any worse than it is now, best case, it could clean up and you might decide not to reblue. and the Kroil is an excellent bore cleaner, lubricant and penetrant oil. very multi purpose and has become my favorite product for all m y firearm needs.

 

It is certainly true that Kroil is the best penetrating oil. A long time ago I bought a gallon can and I'm still using it. I would not use it for a lube though. Many other products are better lubes.

 

i read that a lot of old benchrest shooters liked it for a bore solvent. as a very light lubricant it's fine as you don't have to remove it to apply a heavier lubricant. i use Lucas synthetic gun oil for a lot of my lube needs.