What happened to my Beretta 92fs barrel???


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hellishot
July 25, 2014, 01:07 PM
I was ready to go to the range and found some kind of grayish bluing wear on the barrel of my Beretta 92 fs.

Is this normal wear or was it some chemical wear? Trying to retrace my steps to explain how this could happen. Three days ago the mark or wearing wasn't present.

Help me figure this out.

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Willie Sutton
July 25, 2014, 01:12 PM
A drop of something acidic. It looks exactly like blued steel that has had white vinegar used on it to remove blueing (one method used to de-blue steel). It's very very obviously a spot where some acidic liquid came into contact with the steel. You can literally see where the surface tension of the liquid was influenced by oil on the steel.

Something came into contact with it. Might be sweat, some folks produce acidic sweat and others don't, but in three days likely not. Catsup maybe? ;) Truly, it was something as acidic as vinegar.


In any event it'll respond well to a little Scotchbrite and some cold blue. Just honest wear and tear. Don't sweat it (pun intended).



Willie

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hellishot
July 25, 2014, 01:17 PM
Ahhhhh!!!! I left my 92fs on the table last night and maybe my significant other move it while she was doing her nails. Or could have been my sweaty palms. But at least I know.

Thank you Willie.

WestKentucky
July 25, 2014, 01:59 PM
Acetone will do that to parkerized guns. I found out using fingernail polish to highlight an AR reciever. When cleaning off the excess color I removed the park on part of it. Looked pretty similar.

tipoc
July 25, 2014, 02:12 PM
You, or someone, laid a piece of material against it that had some substance or chemical or liquid on it. You can see the pattern of the weave of the fabric. It's not a fingerprint or a palm print as it is too regular for that. Man made, not man.

Something laid up against it for enough time to effect the bluing, cloth, fabric, something.

tipoc

nugun55
July 26, 2014, 04:46 PM
Acetone on a finger tip, no doubt.

rcmodel
July 26, 2014, 05:10 PM
I hate to disagree.

But Acetone simply will not remove Parkerzing. bluing, anodizing, or any other metal finish except paint.

AR receivers are not Parkerized because they are aluminum.
You can't Parkerize aluminum.

If Acetone took it off, It was painted.

rc

Willie Sutton
July 26, 2014, 08:06 PM
^^

As I said, something acidic.


Willie

.

Helidude
July 26, 2014, 08:52 PM
I purchased a brad blasted 1911 some time back.
I did a cold blue ( stuff from Wally World or academy ).
Used a heated oven during my "process".
It mostly turned out nice. But there was one spot on the slide that I had mishandled
that didn't take that showed up like yours imediately.
It could be something similar to that.
Or you or someone else handled with something on your hand or rag or glove reacted with it.
It's easy to cross contaminate even when you think you have it all in order.


A side note:
The cold bluing lasted a couple years ( including my print) while I used and wiped it
down on a regular basis.
I stored it for more than a year, having wiped it with oil.
Apparently, the oil soaked into the gun case, it was stored in.
It developed a slight " patina" ( yeah, rust) and I discovered when I finally had a chance to
get it out again.
Better than bare steel, but no replacement for actual bluing or parkerizing.

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