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Old 04-10-2006, 06:58 AM   #1
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Glock 20 Malfunction Question - Please Help

Hello Everyone,

My Glock 20 is having a couple of malfunctions that are occurring more frequently than I would like. Could someone give me some help in diagnosing the problem?

The gun is entirely stock except for the Arotek extended slide release I installed onto the gun when I bought it in 1999. It is one of the models with finger grooves, but no rail.

Using full capacity, factory 15-shot magazines I am having the last round and occassionally the next to last casing of the magazine either get caught on the extractor and not eject or (more commonly) wedge itself perfectly in the center part of the top of the ejection port with half of the casing in the gun and half of it out.

Last weekend out of 150 rounds fired I had 2 of the ejector style malfunctions and 3 of the wedging style. It has had this problem with a range of quality loads (e.g., Winchester, DoubleTap, etc.) and with more than one magazine. Plus, the gun was well lubricated with oil on the rails and on top of the barrel when these problems occurred last weekend.

Am I doing something wrong? Weak mag springs? Weak recoil spring?

Can someone please help?
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Old 04-12-2006, 08:10 PM   #2
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This will not be the answer that you want to hear but I can almost assure you that it is being caused by your grip. You may have heard the term "limp wristing" your gun. Make an extra effort to get a good firm grip and a solid foundation for the gun to work against and try a few rounds and see if it gets any better. Glocks generally do NOT just have ejection problems with quality ammo.

Another option would be the wrong spring-loaded bearing in it. If it has an LCI type extractor, it takes a different spring-loaded bearing than a regular extractor and this WILL cause an occassional FTE.

Additionally, check the extractor itself. If the top corner is chipped or beginning to round off, that could also cause it. One of the most common things that causes broken extractors is dropping a round in the chamber and then dropping the slide on it. This forces the extractor to bounce over the rim of the shell and under normal operation, it does NOT do that.

One last thing, if it's not the gun itself, would be a magazine failure. Buy yourself one new mag and try it. If that works, buy you some new mag springs.

I hope this helps you figure it out.
 
Old 04-19-2006, 01:40 PM   #3
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A Glock malfunctioning? Nonsense! You must be seeing things.

But seriously, if this always seems to happen toward the tail end of the magazine, the first thing to try is new magazine springs.


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Old 04-20-2006, 07:09 PM   #4
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I would bet that Cope is right....as the gun gets emptier, it gets lighter
too, and recoil 'whips' a little more and is a tad more sensitive to limp-
wristing.
 
Old 05-15-2006, 09:42 PM   #5
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I had never in my life heard the term "limp-wristing" until after Glockism had become a religion about 5 or 10 years ago. So just out of curiosity I took my Glock 20 (Bar-Sto barrel, 3.5 lb. trigger) down to the range and tried my level best to obtain a malfunction through "limp-wristing". I held the pistol as loosely as possible with three fingers of my right hand with my forearm as vertical as possible. I didn't look through the sights because I didn't want to get whomped in the forehead. If I had been looking through the sights I would now have a nice crease on my head! I can't think of any way to get my wrist any limper and still keep the pistol in my hand when firing.

Guess what? Out of three full magazines I experienced no malfunctions whatsoever! Not one. Of course I have a reasonably new magazine spring and recoil spring.

So when I hear "limp-wristing" I will take it to mean "undiagnosed pistol malfunction".


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Old 05-16-2006, 06:19 AM   #6
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The term limp wristing came out many, many years before the Glock was even invented. Just because you can't make yours malfunction doesn't mean that it doesn't exist.
As a full-time, professional instructor, I see it fairly regularly and it is monotonously simple to correct on ANY semi-auto pistol. More often than not, it is women and weak, fragile men but we see occassionally on the big guys too.
 
Old 05-16-2006, 01:03 PM   #7
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Wellll, the fact that I can't get my pistol to malfunction when holding it as extremely limply as possible tells me that if someone else gets a malfunction while "limp-wristing" less extremely then there is probably some underlying undiagnosed problem that is possibly being aggravated by limp-wristing.

If such a malfunction is caused by a spring growing weaker, or dirt accumulating, or a part wearing out or fracturing, then it would likely get worse over time, perhaps suddenly, until the malfunction will occur with even the firmest hold. The problem should be diagnosed and corrected, rather than attributed to limp-wristing, so that a serious failure will not happen at a serious time.


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Old 05-16-2006, 01:28 PM   #8
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We have NIB guns taken straight from here to my range that have done it. It has always happened and likely always will. With everything else being known new, the diagnosis and the cure is pretty predictable.
AFAIK, the major training schools teach the same thing. I have my doubts that they would teach the diagnosis and the cure if the problem didn't exist.
 
Old 05-16-2006, 01:46 PM   #9
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I've seen it quite a bit, mostly with lighter guns....
 
Old 05-17-2006, 04:27 PM   #10
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OK, so why can't I get my Glock to malfunction through limpwristing?


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