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Old 03-23-2016, 12:42 PM
Reacher Reacher is offline
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Default Rust on the muzzle

Hello guys, new user from Italy here. Just bought an used M&P 15-22. Two boxes of 22lr and I already like it.
The problem is that I've noticed a bit of rust on the muzzle. Pic attached.
I was wondering if it is a good idea to try to remove it with 1000 grit sandpaper and some gun oil. It seems very superficial.
Any hint on how to do this without damaging the muzzle?
Thanks in advance.


p.s. Is this issue common? I've seen two other M&P 15-22 before buying this and both had some rust on the muzzle and the barrel.
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Old 03-23-2016, 12:47 PM
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Quote:
I was wondering if it is a good idea to try to remove it with 1000 grit sandpaper and some gun oil
Might try superfine (0000) steel wool and gun oil, and rub lightly. Sandpaper will take off all the finish.
If you are in a humid climate, might try putting wax on the outside finish for better protection.
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Old 03-23-2016, 01:09 PM
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Welcome to the forum. Try the 0000 first and keep it well oiled.
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Old 03-23-2016, 02:29 PM
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Rust is neglect... you bought it used.. original owner not meticulous I'd guess.

That's not the end you look from while shooting.

Piece of cotton some oil press with your thumb in a circular motion. Repeat a few times as you'll see color on the cloth.

Go shoot.
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Old 03-23-2016, 03:30 PM
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Plenty of youtube vids advocating vinegar for rust removal...vinegar and a toothbrush...just don't damage your crown if you go at it with sandpaper.
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Old 03-23-2016, 03:37 PM
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The thread title would make a good title for a country and western song.
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Old 03-24-2016, 10:56 AM
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Cannot find 0000 steel wool anywhere. Gonna leave sand paper as a last resort. Already tried cleaning with cotton and oil but it wont work.
So vinegar and a toothbrush? Has anyone tried doing this on a firearm? Wont vinegar ruin the bluing?


@bigggbbruce usually rust means neglect, but this is not the case as the gun was the best kept used firearm I've ever bought.
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Old 03-24-2016, 11:08 AM
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Quote:
Cannot find 0000 steel wool anywhere
In the USA, all the big hardware stores sell it, and Amazon sells it online. Never been to Italy, but somebody there must sell it for polishing fine finishes on wood, metal, glass.
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Old 03-24-2016, 11:40 AM
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Vinegar will remove blue. DON'T USE IT!!!

Do not use sandpaper of any kind.

Use oil and an old tooth brush. Let the rust soak in the oil. It will eventually go away, or be greatly reduced. Anything more will damage the gun.
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Old 03-24-2016, 12:33 PM
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Is the barrel really light blue like it appears in the photo? I haven't seen any 15-22s like that.
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Old 03-24-2016, 01:44 PM
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Quote:
Originally Posted by andyo5 View Post
Is the barrel really light blue like it appears in the photo? I haven't seen any 15-22s like that.
Nope, it's a standard barrel. The strange color is a problem with the cellphone camera.
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Old 03-24-2016, 01:53 PM
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Quote:
Originally Posted by Reacher View Post
Nope, it's a standard barrel. The strange color is a problem with the cellphone camera.
That being the case, I would use fine steel wool or a brass bristled brush and remove the rust using a circular motion consistent with the curvature of the muzzle. When it is gone, clean the muzzle off with alcohol and use a cold blueing (actually flat black in color) such as Birchwood Casey Perma Blue. Follow the directions and repeat as needed. Remember when done blueing, stop the process by wiping with a wet cloth (water), dry it, and wipe with light oil or something like Birchwood Casey Sheath (my choice).
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Old 03-24-2016, 09:58 PM
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I would put a little WD-40 on a terry cloth rag, rub with a little elbow grease until rust is gone. wipe off the WD-40 then oil with a good gun oil.
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Old 03-29-2016, 03:36 PM
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This is becoming harder than I thought. I've tried everything except the steel wool and sand paper.
Does anyone know what is the finish on the muzzle?
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Old 03-29-2016, 09:21 PM
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I would use steel wool if it bothered me. But in your case, then firing end of the barrel, I would write that off as being gun power residue and just keep it oiled.
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Old 04-01-2016, 02:32 PM
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Quote:
Originally Posted by Reacher View Post
This is becoming harder than I thought. I've tried everything except the steel wool and sand paper.
Does anyone know what is the finish on the muzzle?
The finish is blueing. Under no circumstances use sandpaper!!!
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Old 04-30-2016, 12:10 PM
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Big 45 Frontier Metal Cleaner
This is the best item I have ever used for removing rust. Generally I'll oil the rust and let it set and then use the Big 45. It'll remove the rust and not the blueing. I have gotten pretty aggressive with it at times and still no issues. Good luck
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