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Old March 19, 2012, 04:44 PM   #1
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Another glock question.....OH NO

Alot of people like Glocks . Some love them. With that said does anyone know what Glocks are prone to problems? Generation , caliber and models? Also what serial numbers in those groups are most effected? I am mostly just curious but also a Glock owner i would like it to compare with my collection.
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Old March 19, 2012, 05:20 PM   #2
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Most of the problems seem to originate with the Gen 4's in 9MM and was mainly recoil spring related. Glock has replaced/upgraded the springs.
My Gen3 22 (.40 cal) has been flawless and that includes people who have never fired a semi and several hundreds of rounds ranging from some pretty crappy reloads to some Tula stuff and it handled all. I can't ask more out of any pistol than that.
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Old March 19, 2012, 08:14 PM   #3
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I have 2 Gen3's, a 26 and a 17. Both have been flawless. I don't see why everyone hates on them, I like mine.
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Old March 19, 2012, 08:22 PM   #4
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Gen 2 .40 calibers have the rep of having really unsupported chambers which makes them more prone to the dreaded KB (still not likely a HUGE issue). I believe they addressed the chamber in the GEN 3s.

Early Glock 36s had teething problems, feed issues.

There was a run within some serial range where frames or the steel inserts or something to that effect were cracking.

Pre Gen 4 Glock 22s were hit or miss when tac lights were attached which lead to the heavier springs in the Gen 4s.

I think very early Glock 19s had some teething issues.

Something about the 10mm Glocks ripping holes in space time.

The afore mentioned Gen 4 9mm issues.

I think early NFML magazines would crack or buldge.

Sometime in the early 80s somebody mixed a whole lot of ugly in accidentally and that hasn't seemed to run its course yet.

All in all they are all pretty darn good out of the box. Most of the issues have been worked out and Glock seems to be one of the most consistent in terms of quality control out there.
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Old March 19, 2012, 08:33 PM   #5
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You can shoot yourself when you pull the trigger. For a safe action, that;s not real safe! All models and years are affected.

Note: Can happen when trying to reholster under stress.
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Old March 19, 2012, 09:04 PM   #6
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I have purchased three Gen 3 Glock 27's (2 were for my sons and 1 for me) and 1 Gen 3 Glock 19. I have never had a failure to feed or misfire. My biggest complaint with Glocks are the plastic sights. I had Glockmeister replace the sights on all of them with Glock night sights. I have a concealed carry permit and carry the Glock 27 at all times in a Mitch Rosen holster. I did have a magazine to eject one time while carrying and did not notice until I took the gun off that night. Love my Glock's.
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Old March 19, 2012, 09:04 PM   #7
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You can shoot yourself when you pull the trigger
I have that problem with all my guns actually.
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Old March 20, 2012, 10:20 AM   #8
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the most prolifically unreliable glocks are the GEN 4s in model 17 and 19. the ejectors, extractors and recoil springs are the most common explanation for the issues and a lot of times glock just mails you the parts to replace yourself.

Gen 2 and 3 glock 21s were reputedly dropped by a number of police depts due to premature discharges and KaBOOMS.

I really have little love for glock these days. I dont hate them but it seems like one could easily get an equally durable, more highly reliable handgun from another manufacturer like S&W, Ruger, Springfield, or even select Sig models for cheaper or with less hassle and running around.
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Old March 20, 2012, 11:14 AM   #9
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This guy has chronicled ongoing problems he and others have experienced with the Glock 36.

Usually I take this sort of thing with a grain of salt, but it looks like his issues are failrly well-documented.
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Old March 20, 2012, 12:41 PM   #10
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Gen 2 .40 calibers have the rep of having really unsupported chambers which makes them more prone to the dreaded KB (still not likely a HUGE issue). I believe they addressed the chamber in the GEN 3s.
AFAIK the issue was not necessarily addressed during the Gen2 --> Gen3 switchover; I've been told that it was a barrel design change that was done around the same time. The redesigned barrel can supposedly be identified by a dot inside the small pentagonal mark found on the barrel next to the "Glock" logo and serial number.

Also, many Glock fans bristle at the word "unsupported"; IMHO the chambers are better characterized as "less supported" and "more supported". The vast majority of .40S&W autos, Glock or not, do not fully support the entire chamber in the feed ramp area. The issue with early .40S&W Glocks was that they have less support in this area than most other pistols do.

The main issue with the early Glock chamber is the use of handloaded or remanufactured ammo, particularly with brass previously used in an early Glock chamber before being resized; this weakens the brass in the critical area. Multiple firing and resizing cycles and/or hot loads exacerbate the problem. Newer load books have written warnings against reusing "Glocked" brass with feed-ramp bulges in ANY pistol. [Translation: Avoid .40S&W gun show reloads like the plague. OTOH I do this anyway, regardless of the cartridge. ]

That said, there HAVE been documented instances of case failures while using brand-new factory ammo in older .40S&W Glocks. Some people have attributed this to Federal brass that is supposedly thinner than other brands, but I have yet to see a reputable source to back this up. YMMV.

At any rate, I wouldn't characterize this as a critical "avoid the pistols at all costs" type of problem; the rate of failures seems pretty rare, although IMHO the warnings about reloaded ammo are worth heeding.
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Old March 20, 2012, 06:37 PM   #11
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I am on a quest to find a better 9mm gun than a Glock. I have a G17, G26 and G34. I also have a Para Ordnance 18.9 1911, and Keltec PF-9.

I have at one time or other owned Beretta PX4, the compact and full size type, the S&W Sigma. I have tried the Beretta 92FS, a Kahr and Ruger (I don't recall the model). I also have tried Colt 1911.

They all have some pros and cons. But I keep my Glocks because I think for out of the box experience, reliability, accuracy, price and ease of maintenance they are hard, if not impossible, to beat.

My next purchase will be an H&K USP in 9mm. I'll keep looking for a better gun, in the meantime I will hang on to my Glocks.
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