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Discussion Starter · #1 ·
I noticed some marks on the breech face of my Gen2 G19. They look strange to me.

This gun is just back from Glock to have the "upgrade" parts changed out. Glock didn't mention them.

What do you think?



 

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Discussion Starter · #4 ·
What does the back of the barrel that makes contact there look like?
It is worn, as this gun has many rounds through it, but it looks like normal wear to me.

My photography ain't great :upeyes: but it looks to me like the galls go from the firing pin area upwards and actually are gouges in the breech face.

One of the gouges has a little bit of material pushed up at its termination point--indicating to me that there was a pretty strong force involved in making it.

Could these be machining marks?
 

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Discussion Starter · #6 ·
My old G22 has identical wear marks/gouges-It runs like a top so I don't worry about it-hell it's 20 years old:wavey:
Thanks, that is comforting. I have had a few problems with this pistol, but don't really think they are related to the galling on the breech face.

Mostly, I'm just curious about what could have made these marks. I had a vision of some shade tree "smith" trying to pry or force something at some time in the past...
 

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They are a normal part of the machining process they used back then, or possibly the type of steel, the way the steel was finished, or the way the steel was processed prior to delivery. I have had several older Glocks and they have identical marks. They are not caused by anything other than the way the gun was made.

Don't worry about it. It doesn't mean anything and it doesn't affect anything.
 

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Thats just normal wear and tear, should not effect anything at all. Ive got a g21 with about 25k rounds through it that looks exactly the same.
 

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It's not wear and tear. Many, if not most of the older Glocks have those marks. Not only do they have them now, they had them when they were new.
 

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It's normal. Polish it with Flitz and it will be mirror bright and make feeding smoother.
 

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Well, I'm certainly glad we got that problem explained. Since you know about these marks, what caused it?
Looks to me like the breech-face was cut with a broach. If it were a milling step, it would likely be smoother. It also might be done at the end of the slide milling process, after taking some measurements or something. :dunno:
 

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Earlier Glocks had those marks on purpose. I forget the exact reasoning but I think it had something to do with the breech face being able to have some dirt/gunk on it without affecting functioning.
 

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It's normal. Polish it with Flitz and it will be mirror bright and make feeding smoother.
NO. You can't polish the marks out. If you were able to polish deep enough to remove the marks, you would have surely polished well past the thickness of the tenifer protection. By that time, the breach face would be corroding every time you set the gun down.
 
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