What's wrong with this picture?

[prkprisoner]

It does look more like a machine mark than a crack. Could be a blurry picture too.

[AFTII]

This crack?

That's it. Thank you.

[1G75]

I have the same marks on a G19MOS and G45 slide, look more like machine marks than crack to me.... if this is what Brad pointed out in the picture

[PaperTarget]

yes. looks like a cutting tool path.

[jsigone]

cracks are not as pretty as machined marks w/ .003 radius tolerances.

lube it and fire it

[SkyHawk]

Put some thin oil on it, let it sit 5 minutes and then wipe it off. Turn it over and let it sit. If it is a crack it should be weeping oil.

[AFTII]

I have the same marks on a G19MOS and G45 slide, look more like machine marks than crack to me.... if this is what Brad pointed out in the picture

Thanks, that helps a lot. Does your G19 MOS or G45 have uneven wear marks on the top of the slide as well? Is the DLC coating worn off on the inside of the slide opposite the ejection port, i.e., the inside L side of the slide?

I took a look at my G19X, and it has a similar, but not identical, machining mark in that area and my friend's G45 doesn't have any machining mark in that area. I can see now that what I thought was a chip, is a machined in slot, however, it looks like the "crack" terminates in that slot.

I like this gun and would rather I be wrong about the crack, but I've owned many Glocks before and none have worn as badly or as quickly as this one. Perhaps the DLC coating just sucks.

[Preston-CLB]

If you are feeling hinky about the workmanship, or the structural integrity of the gun, contact Glock and have them evaluate it. Go on from what they say.
-P

[NewbieDave]

Same on my G45... not crack, just the way its machined for the "improved" breechface. See below for the details. If lite correctly for the close-up, the crack disappear and shows how the "crack" is just edge of a ramp.





NB

[1G75]

My G45 has a little more than 1K rounds and it's worn quite a bit more than NewbieDave's pics on the finish...but I still don't think it's something you need to worry about.

[Powder_Keg]

Interesting. Looks like Glock added some type of relief cut to the very edge of the breech face. That tooling path that you thought was a crack is actually there to remove a small sliver of material that would have become a burr. The angle of the photo from NewbieDave adds clarity to what you are seeing.