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Old 10-15-2012, 05:33   #1
Solscud007
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Gen4 G21 misfeed/jam

I used my new Gen4 G21 yesterday for the first time. I used it in a USPSA match.

On stage 1 (not my first stage as I shot stage 2 first) I strictly used my KRISS extended mags. They were made with Preban magazines. Two U-notch and one square notch.

Anyway a minute into this video you can see the jam.




I slowed it down and screen grabbed frames to show the jam. Unfortunately I did not get much of the jam on camera.


You can see the round ejected and the new one fed but jammed.
General Glocking



In this frame, I realize there is a malfunction and begin to bring the Glock back to problem solve it.

General Glocking

When I removed the mag and locked the slide back, the round got lodged perpendicular to the chamber and was wedged in there. I dont have a picture of this but the round would not fall out. I had to stick my finger inside to pluck it out.

I think it may be due to the feed lips? The mag in question was my U notch.

edit: upon review, the mag that had a problem was NOT a square notch but a U-Notch. The Unotch mags have my custom white speedplates.

Last edited by Solscud007; 10-15-2012 at 07:31..
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Old 10-15-2012, 06:35   #2
DannyR
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Basic question #1--what were you using for ammo? Factory? Reloads?

Basic question #2--have you tried stock magazines?
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Last edited by DannyR; 10-15-2012 at 06:36..
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Old 10-15-2012, 07:37   #3
Solscud007
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I have not used the stock mags as they are illegal in NYS. I have some 10 rd mags and I used them in stage 5.

Now that I think about it. The round may have been an oddball. I used the remainder of my UMC Remington 250 pk. About 98 rds and later used my Magtech 50 pk.

Since this was Stage 2, I had not yet reloaded my three extended mags. My rounds were stored in those plastic boxes that hold 100 rds. I recall one of them being physically shorter. Possibly a reload I picked up off the ground from earlier. That may have been the odd round that jammed.
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Old 10-15-2012, 07:41   #4
Meathead9
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Were you shooting in Open Division?
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Old 10-15-2012, 07:56   #5
Solscud007
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Quote:
Originally Posted by Meathead9 View Post
Were you shooting in Open Division?

Yes . . . "Open" haha.

As I am an active member of this club my friends give me leeway as to what I run. Local Rules.

We scored my stages but we will not be uploading them to USPSA for scoring.

I wanted to focus on my sight picture and trigger pull. So I figured extended mags would eliminate the need for a reload. Plus It was a lot of fun hehe.
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Old 10-15-2012, 11:31   #6
MrVvrroomm
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Quote:
Originally Posted by Solscud007 View Post
I have not used the stock mags as they are illegal in NYS. I have some 10 rd mags and I used them in stage 5.
But a 25 rd mag is legal???

Use oem mags and your problems will disappear.
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Old 10-15-2012, 12:22   #7
Solscud007
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Quote:
Originally Posted by MrVvrroomm View Post
But a 25 rd mag is legal???

Use oem mags and your problems will disappear.

The mags are Preban Glock 21 13rd mags. They are NY legal. So is adding extensions. I used KRISS mag extensions. Making them 25+ rd mags. All NY legal.
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