Spot Repair Parkerized Finish

[sueshake]

Just bough an used Mossberg. Overall it is in good condition. However, there is small blemish close to the muzzle on the barrel, as shown in the attached picture. The previous owner tried to repair it but obviously made a bit worse. Is there any way that I can repair it be myself? I don't care too much about how it looks but am concerned about potential rusting and corrosion. I will appreciate any advice.

[NPFreedom]

For small jobs, i have success with a product called Birchwood Casey Perma Blue. You can sand down the area with steel wool and apply with a rag.

[aippi]

There is no spot repair for Parkerizing. I whish there was as I have parkerized thousands of guns and it is a heart breaker to have to blast off a perfect park job because of one spot. Keep the weapon oiled and there should be no issue. You can see where the guy tried to rub it down with steel wool and then use cold blue. He only made it worse. If it was down to bare steel then he should have simply degreased the area and dabbed some cold blue on it, not rub off the finish with steel wool. I say leave it be as it is a cosmetic issue only. Here is a before and after of my Parkerizing to show that I do in fact know the subject. You can see by the serial number it is the same gun. Just adding this because you never know on these forums if you are getting advise from someone who knows the subject.
Before
After

[sueshake]

There is no spot repair for Parkerizing. Keep the weapon oiled and there should be no issue. You can see where the guy tried to rub it down with steel wool and then use cold blue. He only made it worse. I say leave it be as it is a cosmetic issue only.

I know the previous owner has used steel wool but did not realize he has used cold blue. Then I will just clean it and then put some froglube on it. Thanks for advice.

[sueshake]

I just got it out of jail. Since this is my first shotgun, I am not sure if what is shown in the attached picture is normal or not.

[gwgn02]

I just got it out of jail. Since this is my first shotgun, I am not sure if what is shown in the attached picture is normal or not.

That looks odd...

[sueshake]

That looks odd...

So you think somebody did that to the barrel instead of manufacture? It looks like there was some number which has been partially scratched off that area. That concerns me.

[gwgn02]

So you think somebody did that to the barrel instead of manufacture? It looks like there was some number which has been partially scratched off that area. That concerns me.

What model is it?

[Citadelgrad87]

Have you priced a new barrel?

Swap that puppy out for a newer one without that blem.

I'd hang on to that one as a hunting/rain/class barrel if it bothers you.

[sueshake]

What model is it?

590a1 18.5" barrel

[sueshake]

Have you priced a new barrel?

Swap that puppy out for a newer one without that blem.

I'd hang on to that one as a hunting/rain/class barrel if it bothers you.

Thanks for the advice. I am not very concerned about the looking. I just wonder how the barrel got that flat spot (or it is just the way it is supposed to be), especially it looks like there was some number or letter on that flat spot which has been partially scratched off.

[sueshake]

I found a video and my guess is that flat spot is the design? See the screenshots.

[NoHeavyHitter]

I find that quality cold blue works just fine for touching up small blemishes in park - just NEVER use steel wool.

[aippi]

Yes, that is the design. It would not fit if that area was rounded off. Time to get out and get some round count on that fine gun. You are going to get dings and scratches on a shooting gun and the only way to avoid it is to leave it in the gun safe. After the first few nicks you will not even care as long as the weapon functions perfectly. You picked a good solid fighting shotgun.