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Old 04-13-2003, 05:33 PM   #1
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Glock 34 slide not locking back

I am using new 10 rd mags and CCI blazer 115gr and 125gr ammo. In practice today , the slide was not locking back after the last shot. This has just started to occur. Any ideas on this? Thanks
 
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Old 04-14-2003, 10:31 PM   #2
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Trader,
Unfortunately I have a few. The OBVIOUS would be to suggest Limp-Wristing, but I won't!
1. Dirty Mags
2. Weak Mag Springs
3. Fouled Followers (Goes with the weak springs and dirty mags)
4. Worn or incorrectly reinstalled Slide Stop.
Wolff has Extra Power mag springs and the standard Glock parts suppliers will stock the springs and Slide Stop.

www.topglock.com
www.glockmeister.com
etc, etc, etc.....

Hope this helps,
Bert
 
Old 07-21-2003, 01:41 PM   #3
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My New Glock 34 just did the same this weekend, jammed about every round or at best every other round and the slide doesn't lock back.
 
Old 07-21-2003, 03:15 PM   #4
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I had a similar problem with my Glock 19. I didn't know what the problem was until I had some watch me shoot. I grip with both thumbs along the side of the frame pointing towards the muzzle. My left thumb (I'm right handed) was actually rubbing against the slide. I couldn't feel it during recoil but it was enough to slow down the slide and cause some function problems. I changed my grip slightly and the problem went away.
 
Old 07-21-2003, 10:11 PM   #5
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glock clips and limp wristing

I will pay very close attention next time at the range and see if my thumbs are close, but I seriously doubt it. I usually cup my left hand on the bottom of my right with some wrap around. I just held it like I normally shoot and I am inches away from the slide.

I did closely look at the clips and compare them to the Glock 19 magazines on my other Glock ( which I never have jam problems with ****NEVER***). There are subtle differences, the most noticable is when empty the the follower sits about 3/32 inch higher on the Model 34 Magazines than on the model 19 magazine. One of the model 34 magazines looks like a small piece of plastic is chipped out on the right hand side. I guess maybe an 1/8" long and 1/32" wide.

I am also certain that these are slightly different models as the plastic moulding on the outside is different with the new mag being tappered towards the top and the old stlye ( definately a newer model as it is only a year or so old ) has a ledge.

I am guessing so correct me if I am wrong that a standard Model 17 clip will fit in the Model 34. The question is are the older clips better? I saw several posts saying the old high capacity magazines are best. But is this just cause they feel they need the extra 5 rounds ( learn to shoot straight, I never complained about 9 rounds in my 38 super, or 7-8 in my 45 ACP but I guess a few extra rounds won't hurt) or are there actual benifits to the old staggered round magazines?

My thoughts are I am going to stick the 34 mags in my model 19 and if I have jams in that I can assume I have found the culprit.

Also no news to anybody really but stock factory sights suck, both adjustable and fixed. I am considering a set of Heine Slant Pro's, any comments from someone who has done this. I like a narrower sight than the combat sights, I have a set of MMC on one of my Colts but they are still a little wide for me. Thoughts and comments?
 
Old 07-29-2003, 07:40 PM   #6
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I have found that all of the high-cap Glock mags work fine. Friends tell me that the ten rounders suck.

Yes, a G-17 mag should fit and function fine in a Model 34. Essentially it is the same frame in the grip.

I have a set of Race Cut Heinie Straight Eights on my Model 17, which were milled and installed by Matt Kartozian at Custom Glock Racing. Narrowest front sight on the market, and the rear blade is opened up. I am going to put them on all of my Glocks.

Let us know if the problems with that gun get solved and how.
 
Old 08-06-2003, 06:47 AM   #7
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I number all of my 10 round 17 mags; all are stock & some fail to reliably lock the slide. These are relegated to use as either stripper mag or practice mag. Likely weak magazine springs are at fault. Try Wolff or ISMI 10% extra power 10 round magazine springs.

One other cause might be a rounded slide stop or rounded slide stop notch in the slide. While this happend more w/ guns like the 1911 - especially the stainless ones, its important to never, ever, drop the slide by thumbing the slide stop unless really necessary. Rounding will occure and failure of the slide to reliably lock back will eventually follow. Always grab the rear of the slide to release it.

"I usually cup my left hand on the bottom of my right with some wrap around. "

While I agree that your grip is not causing the slide problems, your current grip could be much, much better. Take a look at the introductory articles on www.uspsa.com or do a search on "proper grip" on www.brianenos.com or www.mattburkett.com This type of grip was once commonly taught but it has been demonstrated to be far less accurate than a good two hand grip w/ substantial contact by both palms.

Chris - Matt is a nice guy and one of the top Glock shooters in IPSC/USPSA. He knows his stuff & the heinie 8s or slant pros are about the best thing out there.

Regards, C.
 
Old 08-07-2003, 06:52 PM   #8
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The last time out, I loaded 1 round of Federal American Eagle first in every mag, followed by 9 rounds of CCI Blazer 115gr. The slide locked back every time on empty with the Eagle as the last round.
 
Old 08-25-2003, 07:53 AM   #9
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Quote:
Originally Posted by Trader
The last time out, I loaded 1 round of Federal American Eagle first in every mag, followed by 9 rounds of CCI Blazer 115gr. The slide locked back every time on empty with the Eagle as the last round.
==========

OK so are you saying it is ammo?

If so could it be a differnt recoil impulse and a stronger grip is needed for the other ammo or your finger may be bumping the slide stop? uhm....

sb
 
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