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It was with the Gen 3 guns the extra pin was added and the chamber was given more cartridge support.
Gen 5 increased slide weight through increased dimensions. The Gen 4 is where GLOCK addressed the recoil impulse of the .40, among other things, by abandoning the flat wire single spring in favor of the dual spring on compact and service models. It was initially a little over-sprung for the std. pressure 9mm, and resulted in a lot of BTF issues. GR
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The Gen3 Glock 27 already had the dual recoil spring assembly. It was a steel base upgrade to the Gen 2.5 G27 RSA which had a polymer base.
Gen 3 4 5 share the same RSA part number.
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They are both loaded to the same pressure - 35k PSI.
The .40, however, has a higher std. pressure muzzle energy, w/ a resultant increase in recoil and slide velocity.
The .40 simply has a larger diameter case and case head which results in more hoop stress and bolt thrust at the same pressure. 27% more area = 27% more stress and thrust.
Forgive me my nonsense, as I also forgive the nonsense of those that think they talk sense.
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Campfire Sage
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The Gen 4 GLOCKs were the re-engineered model to address the .40.
That's why there were so many 9mm problems with'em.
GR
The 9mm problem with the Gen 4 was solved by changing to a slightly weaker recoil spring.
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The Gen 4 GLOCKs were the re-engineered model to address the .40.
That's why there were so many 9mm problems with'em.
GR
The 9mm problem with the Gen 4 was solved by changing to a slightly weaker recoil spring. Sometimes "Perfection"... requires a bit of adjustment. 8>) GR
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They are both loaded to the same pressure - 35k PSI.
The .40, however, has a higher std. pressure muzzle energy, w/ a resultant increase in recoil and slide velocity.
The .40 simply has a larger diameter case and case head which results in more hoop stress and bolt thrust at the same pressure. 27% more area = 27% more stress and thrust. F=MA. Same pressure, larger piston/heavier bullet. GR
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in this case, the fired case ejected. The case was not split. I talked to Glock USA tech rep on the phone. He said it sounds like the broken spring caused the issue. I am going to replace the guide rod/spring. Is there a better aftermarket brand to get, or is the OEM piece adequate
This particular pistol was made in 1996. My brother in law carried it as an active duty Federal officer in his last posting. Part of his job was as a firearms instructor. I talked to the BIL today, and he says that pistol probably had over 5000 rounds through it. He subsequently gave it to my Son. I'm glad that your son is OK. It sounds like this was not a "kaboom" though. Kaboom, to me, means a catastrophic failure of some sort. And likely related to a design or QC issue with the firearm or ammunition. The issue that your son experienced, sounds like a maintenance issue. The pistol has a spring-mass system, and the spring sounds like it was worn and perhaps the reason why he had two failures to fire. Some semi-autos will release the striker even if the slide is not 100% in battery. If it is too far out, it won't fire. But if it's in that in-between zone, some of the energy will go towards moving the slide forward instead of being directed towards the primer. You can confirm this with any semi-auto pistol, unloaded of course. See how far out of complete battery that it will release the striker. Anyway, if the RSA was worn and resulted in what I speculated above for the failures to fire, but then the slide was 100% in battery for the next attempt, then there was no kaboom. The pistol just had a compromised spring, in the spring-mass system. There simply wasn't enough slide mass to compensate for the weakened spring. I remember hearing claims of the Glock 21 having a reputation for kabooms, but I don't know if those were real either. And as far as I know, the early Glocks in 40 S&W had reputations for being unreliable, especially with WML, and long-term durability issues, but not kabooms per se.
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I would call Glock and inquire about sending the pistol to them to inspect. I've heard they'll take old Glocks, for example, and make sure they have all the updates they may need. I have heard of some .40 S&W issues with Glock in the past since the pistol was designed as a 9mm, not a .40 S&W or .357 SIG (as opposed to a Glock 20, 29, or 30 which were designed around the 10mm and .45 ACP cartridges. Anyway, it wouldn't hurt to play it safe and see what they have to say. Yeah, Glock wanted to beat S&W to the punch by getting a .40 S&W chambered model out before them, so they simply put a new barrel, extractor, and magazine on the Model 17 and, voilà, objective achieved. Every other company came out with a .40 S&W specific design, and then standardized that model for both 9mm and .40 S&W, so you had overbuilt 9mms, and .40 S&W models strong enough to withstand the pressures. . Glock addressed that problem with Gen V .40 guns. Naturally many Glock fans do not like it because new guns are heaver and do not fit into previous generation plastic holsters. As a side note certain guns were made with superior strength/wear resistance? steel barrels. Those have dot inside pentagon stamp on the barrel (Gen 3 and Gen4?). This is what Glock guys say dot stands for, however, I do not know where their information comes from. I have never handled gun with dot only seen pictures. how do you manage to get through life being so stupid
The government plans these shootings by targeting kids from kindergarten that the government thinks they can control with drugs until the appropriate time--DerbyDude
Whatever. Tell the oompa loompa's hey for me. [/quote]. LtPPowell
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Campfire Kahuna
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I am having the devil's own time finding a replacement guide rod/spring assembly. Glock says they don't sell to the public any more. Brownells, Midway, Lone Wolf, Glock Store and a host of others don't have the part. Gen 1, 2 or 3 will fit. Gen 4 or 5 won't. Glock Model 27.
Anyone of y'all have one that you would part with? Know anyone with one for sale?
Sam......
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I am having the devil's own time finding a replacement guide rod/spring assembly. Glock says they don't sell to the public any more. Brownells, Midway, Lone Wolf, Glock Store and a host of others don't have the part. Gen 1, 2 or 3 will fit. Gen 4 or 5 won't. Glock Model 27.
Anyone of y'all have one that you would part with? Know anyone with one for sale? Glock should support their product. The below link may be an option for you. Otherwise I would look for the spring itself and replace it instead of the rod if its in good condition? https://www.centennialdefensesystem...sembly-For-Gen-1-5-Glock-2627_p_695.html
Last edited by Esox357; 07/21/21.
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I am having the devil's own time finding a replacement guide rod/spring assembly. Glock says they don't sell to the public any more. Brownells, Midway, Lone Wolf, Glock Store and a host of others don't have the part. Gen 1, 2 or 3 will fit. Gen 4 or 5 won't. Glock Model 27.
Anyone of y'all have one that you would part with? Know anyone with one for sale? Try ssguiderods.com. They are in Florida.
The question isn't who is going to let me; it's who is going to stop me.
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Give these guys a call. https://www.edspublicsafety.com/contact/Super large seller/distributor, and they are almost in Glock's "backyard." You need OEM part number 2211
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Sam, I believe (but it’s been quite a long time) that when I got a heavier recoil spring and steel guide rod for my Glock 20, I got everything from Wolfe Gunsprings…may even trigger/striker parts. Might be worth a look.
Mathew 22: 37-39
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I love glocks but i did have one kinda kaboom. Brand new g23 gen 4, shooting factory federal hydroshock ammo. Was on the 3rd magazine. My best guess is it somehow fired out of battery, the the casing looked
like a backwards 357 sig if you can imagine that, the case was bulged out at the base near the rim. When it happened it blew the extractor and spring into no mans land (never found em) I han a minor burn from escaping powder i guess and lots of recoil. I sent it into Glock and they fixed it, of course they blamed the ammo but when i got it back its ran perfectly
Rather be judged by 12 than carried by 6.
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I love glocks but i did have one kinda kaboom. Brand new g23 gen 4, shooting factory federal hydroshock ammo. Was on the 3rd magazine. My best guess is it somehow fired out of battery, the the casing looked
like a backwards 357 sig if you can imagine that, the case was bulged out at the base near the rim. When it happened it blew the extractor and spring into no mans land (never found em) I han a minor burn from escaping powder i guess and lots of recoil. I sent it into Glock and they fixed it, of course they blamed the ammo but when i got it back its ran perfectly You are brave. If same happened to me I would replace that gun with something from different manufacturer.
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Campfire Kahuna
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I have an old friend, retired gunsmith and Glock specialist looking through his boxes of stuff. I back ordered a Lone Wolf guide rod/captured spring which may be in stock with them next month. I could not find any sort of spring at any price in stock yesterday.
Sam......
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This shows to be in stock but does not mention which Gen or all generations. I don’t know but it might be worth a look. https://www.midwestgunworks.com/page/mgwi/prod/ssgrg26
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Campfire Kahuna
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akpls, I want to thank you for the heads up on ssguiderods.com. They had the correct guide rod/spring in stock, and have already shipped. $43 out the door. They were a pleasure to deal with.
Sam......
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I love glocks but i did have one kinda kaboom. Brand new g23 gen 4, shooting factory federal hydroshock ammo. Was on the 3rd magazine. My best guess is it somehow fired out of battery, the the casing looked
like a backwards 357 sig if you can imagine that, the case was bulged out at the base near the rim. When it happened it blew the extractor and spring into no mans land (never found em) I han a minor burn from escaping powder i guess and lots of recoil. I sent it into Glock and they fixed it, of course they blamed the ammo but when i got it back its ran perfectly Pretty sure the FBI quit using 147 gr Hydra's due to excessive pressure issues
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