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Old 11-16-2012, 18:24   #1
flw
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Primer markings from striker and slide striker channel

Its difficult to explain in words and my camera won't focus on the brass to show you all what I'm talking about. I have a G23 Gen 4. Here it goes.

When looking at a casing after firing it, the primer has the typical dimple (inward) but its inside of a outward rectangle shape stamped or pressed during the firing cycle.

All casings have the same post fire markings and no pre-firing marks. These markings occur with different ammo types (barrel 40 to 9 conversion). So it shows on 40 and 9mm brass casings.

The rectangle shape embossment is the same shape and size as the open channel in the slide that holds the striker. The ammo is factory target with standard sammi loads. Various mfg's

It may have been doing this all along but I just noticed last range session. On my other guns, this does not occur. Does my G23 Gen 4 have a issue?

Thank You for reading my poor description. I tried.
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Old 11-16-2012, 18:53   #2
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Have you tried Google for glock primer strike images?
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Old 11-16-2012, 18:54   #3
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Click image for larger version

Name:	Primer%20Strikes.jpg
Views:	180
Size:	21.8 KB
ID:	229096

This?
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Old 11-16-2012, 19:00   #4
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Quote:
Originally Posted by uz2bUSMC View Post
Yes. I had to enlarge it to see the rectangle but that's it.

Whats up ?
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Old 11-16-2012, 19:14   #5
uz2bUSMC
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Quote:
Originally Posted by flw View Post
Yes. I had to enlarge it to see the rectangle but that's it.

Whats up ?
Nothin'. It's fine.
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Old 11-16-2012, 19:47   #6
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Quote:
Originally Posted by uz2bUSMC View Post
Have you tried Google for glock primer strike images?
That's a good idea. The internet is full of images of just about anything.
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Old 11-16-2012, 21:50   #7
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All Glocks produce the rectangular striker marks on primers. It's caused by the rectangular firing pin hole on the breech face of the slide.
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Old 11-17-2012, 05:50   #8
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Quote:
Originally Posted by Merkavaboy View Post
All Glocks produce the rectangular striker marks on primers. It's caused by the rectangular firing pin hole on the breech face of the slide.
This is correct, brother.
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Old 11-17-2012, 09:25   #9
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Thats what Glock fired primers look like.

BUT do take notice if the primer hit has a swiped look to it. This could indicate the pistol is unlocking early or the striker channel is dirty and the striker is not retracting fast enough. Or both.
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Old 11-17-2012, 15:09   #10
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Quote:
Originally Posted by Merkavaboy View Post
All Glocks produce the rectangular striker marks on primers. It's caused by the rectangular firing pin hole on the breech face of the slide.
Quote:
Originally Posted by blastfact View Post
Thats what Glock fired primers look like.

BUT do take notice if the primer hit has a swiped look to it. This could indicate the pistol is unlocking early or the striker channel is dirty and the striker is not retracting fast enough. Or both.
Yep, it's a Glock 'primer fingerprint' alrighty.
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Old 11-17-2012, 12:29   #11
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Last edited by cowboy1964; 11-17-2012 at 12:29..
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Old 11-17-2012, 12:32   #12
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Sounds like mighty fine primer strikes to me:thumbup:
The striker tip is a line shape not round like others
posted using Outdoor Hub Campfire
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Last edited by kaech; 11-17-2012 at 12:34..
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Old 11-17-2012, 14:28   #13
flw
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I understand that it is from the striker channel in the slide but why on a Glock and not on any other striker fired guns? (at least other guns I've owned or shot)
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Old 11-17-2012, 16:22   #14
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Quote:
Originally Posted by flw View Post
I understand that it is from the striker channel in the slide but why on a Glock and not on any other striker fired guns? (at least other guns I've owned or shot)
If you look at the breech face of other striker fired pistols you'll notice they use a round firing pin unlike Glock's chisel point firing pin.
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Old 11-18-2012, 06:23   #15
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With super-hot laods

This rectangle gets shaved off a little.
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