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Discussion Starter · #1 ·
Hi everyone. I am new to this forum, but have read a lot of good info from it in the past. I am not a new shooter and am very familiar with Glocks. I purchased a Glock 23 about 6 months ago. So far, I have put abt 1000 rounds through my it. I get an FTF every 150 rounds or so. What's very perplexing to me is that the FTF ALWAYS occurs with the LAST round in the mag. I have 6 mags in total, and have been using 3. All have #8 followers and 2 Stamped by Glock Logo. I don't believe I limpwrist, but am willing to consider the possibility. In fact, I'd be delighted if that were the case. What makes no sense is that this happens ALWAYS with the last round. Statistically speaking, the limpwristing should be more random i.e. midway or early in the mag cycle. I am at a total loss. I sent one of the 2 mags that was giving me a problem to glock and they are going to look at it. I can't see anything wrong with any of the mags. I've taken them apart. I keep the pistol very clean and oiled. Fred, at Glock, suggested that perhaps it's a weak recoil spring (if that's the case, that's disturbing - happening after 1000 rounds), but again, why with the last round? I'd appreciate your all's feedback.
 

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You're not limp-wristing, for exactly the reason you describe.

Your post caught my eye as my lone Glock is a 23, bought before the Assault Weapon Ban sunset, so the first 3 mags I have are 10-rounders, and the next 3 or 4 are 13-rounders. I never ran into the problem you're having.

First questions I have are, what vintage are your mags, and are they all Glock OEM mags? A number of years ago there were two different types of mags produced, some which dropped free from the gun when the mag release was punched, and others which only dropped out about an inch. The former, I believe, were metal-lined mags, and the latter were not. To the best of my knowledge, all current Glock mags drop completely free.

This may seem to be unrelated to your feeding problems, but I suspect that there may have also been a change in mag springs and followers which would affect spring force on the last round. Just a thought.
 

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Discussion Starter · #3 ·
I have the latest and greatest vintage mags G2 with #8 follower. Next time I go to the range I will make sure that the mag is always properly seated in the well. Also, what I am suspecting is that the last round was somehow not properly seated. Before I insert the mag I will tap the cartridge end against my palm to make sure all rounds are properly seated. I hope this is the problem. But then, I am supposed to be doing this each time?
 

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the mag spring could be the problem.
 

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Discussion Starter · #6 ·
You could be right. They are fairly new mags though. The spring tension seems fine, but I'll wait to hear from Glock. They have the first one that gave me the problem. I might have to send the rest. Never had any feeding issues with my G30, G26, G19, or G27. I've read a LOT of FTF reports on the recent G23s (within that last year).
 

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I'll echo what the others have said that it may be the magazine spring. If the FTF issue were occurring before the final round before it feeds the final cartridge into the gun that would be an entirely different problem. It sounds like a magazine spring issue.

My 3rd generation G26 hasn't experienced any FTF problems so far.
 

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Is it all types if ammo? Assuming it is, otherwise, there may not be enough juice to throw that side back along with and a spongy mag spring could be an issue.

The only times I have ever had any feeding/extracting problems with my G-23 is when I was using a 9mm conversion barrel and .40 mags. Once I went with 9mm mags, it cycled just fine.
 

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Wait and see what Glock Says.. but it sounds like a Mag spring problem to me... that or ammo... or a combination of both...

I have the same problem with my .22LR Bolt action... It fails to feed last round only with Federal ammo... so I only put Rem. through it
 

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Do you number your mags so you can tell which mags it's happening with,might only be one or two mags that have a weak spring,or is the slide lock being engaged
 

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Slide locking back, or slide riding over the top of the last round?
 

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Recoil spring. They have updated the spring in the 23. Ask Glock for the newest one. Have had no troubles with my new 23.
 

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I've got about 700 rounds through my 23 and have only had 2 FTF's. Both were at the range with range ammo about 1/2 way through the mag. Dropped the mag, cleared it, replaced mag, continued firing w/ no problems. Placed blame on the ammo, as the gun has been reliable as...well...a Glock.
 

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Spring issues

I agree with some of the others posting above - a last round jam is likely caused by a weak magazine spring. But other things can contribute - like weak ammo or a too-heavy recoil spring or a boogered-up follower or bent mag lips.
 

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Discussion Starter · #19 ·
All good points. Glock will replace my mags. Outstanding cusomer service. This should fix the problem.
 
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