Brand New Glock 34 Gen 5 MOS failure to eject

Discussion in 'General Glocking' started by Kevin H, Sep 22, 2020.

  1. Kevin H

    Kevin H

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    I’m new to Glocks but was sold on “Perfection”. Just bought a new glock 34 Gen 5 MOS. Immediately started jamming/failure to eject with the first shot. Using 115 grain range ammo. Failure to eject after every shot. Anyone else experience this before? It is very frustrating to say the least.
     
  2. SASI

    SASI

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    sounds like limp wristing - get a good solid two handed grip
     
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  3. FireMedic-50

    FireMedic-50 Silver Member

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    You say range ammo, what do you mean and what brand please?
    Steel or brass case?

    Per armorers manual
    , failure to eject causes:

    broken or damaged extractor-unlikely since pistol is new

    underpowered ammo-FIX change ammo. try 124 or 147 grain

    dirty chamber
    -unlikely since pistol is new

    limp wristing-possible/seems unlikely since occurs on every shot.
    Don't rule out

    lack of lubrication- FIX lube per specs

    dirty gun
    -unlikely since you say gun is new

    Have you cleaned pistol at all?

    Most new Glocks have a wet/oiled firing pin channel-wipe that crap out.
     
    Last edited: Sep 22, 2020
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  4. A-Train

    A-Train Member

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    Took my 13 YO son shooting this weekend and he had a similar problem when shooting my G34 Gen 5 MOS. We were shooting WWB 115 GR FMJ and he was limp wristing it for sure. Not sure if that’s your problem but it happened to him about 10 times.
     
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  5. Toocool45

    Toocool45

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    Try cleaning it and properly lubricating it. Then try again.
     
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  6. -JCN-

    -JCN-

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    Get a lighter recoil spring or some stouter ammo.
     
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  7. Kevin H

    Kevin H

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    it is brass 115 grain, don’t remember the brand. I had my more experienced friend fire it too, definitely not limp wristing. I will check firing pin channel but fired out of box
     
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  8. FireMedic-50

    FireMedic-50 Silver Member

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    A new pistol RSA is sufficient
     
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  9. FireMedic-50

    FireMedic-50 Silver Member

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    Welcome to GT!

    Didn't notice you just signed up.

    Firing pin channel shouldn't be cause, but will contribute.

    My post isn't a jab at you, it's from latest armorers manual.

    Trying to troubleshoot from an arm chair.

    I agree with JCN on stouter/heavier ammo. Sure as hell worth a try
     
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  10. Patchman

    Patchman Florist

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    When the gun is brand new, the recoil spring is at its strongest/stoutest (Not to mention metal-to-metal contact of parts that needs smoothing out). It doesn't help reliability when the ammo you're using may be somewhat underpowered. Glocks are designed for 9mmNATO. The U.S. equivalent of 9mmNATO is 9mm+P. After the recoil spring has been broken in, the gun becomes less sensitive to various ammo.

    You can manually rack the slide to break in the recoil spring/simulate firing.

    Good luck.
     
    Last edited: Sep 22, 2020
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  11. Fatboy2001

    Fatboy2001

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    Shoot some real ammo. Win 124 NATO. Real gun requires real ammo. :cheers:
     
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  12. Vic Rattlehead

    Vic Rattlehead

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    I tend to agree on the point of ammo selection in this case. My Glock 17L (long-side) is kinda sorta like a 34. It likes 124gr and does not like 115gr, and it hates the weak-ass house brand ammo that my local indoor range sells for cheap. I feed it decent quality 124gr ammo (Sig, Magtech, S&B, Blazer, etc.) and have had no issues. Same thing with my CMMG Guard 9mm PCC. Come to think of it, I don't even buy 115gr anymore, only 124gr and sometimes 147gr.
     
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  13. jconn465

    jconn465

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    My last two NEW pistols had to use 147 gr for a few boxes. Now it’s. SOP


    Sent from my iPad using Tapatalk
     
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  14. Damn_Yankee

    Damn_Yankee

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    As has already been said, definitely try a more stout ammo. Also, the pistol needs to be cleaned of the factory protectant and properly lubed. Can’t expect a pistol to properly function if you haven’t cleaned and lubed it.


    Sent from my iPhone using Tapatalk
     
  15. ShipWreck

    ShipWreck Beretta 92 Nut!

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    This (ALWAYS clean and relube a new gun before the 1st range trip - this is the cause of so, so many 1st range trip woes). And, use good, factory ammo.

    Also, try to get a good grip on the gun too

    Sho nuff!!!!
     
    Last edited: Sep 23, 2020
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  16. Buckshot Barry

    Buckshot Barry

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    Here is a good thumbs forward hold that most competitors use.

    [​IMG]
     
    Last edited: Sep 23, 2020
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  17. BMiracletx

    BMiracletx

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    Most factory 115 gr plinking ammo is pretty weak stuff. Now combine that with a new gun with stiff springs, possible limp wristing, the slight additional reciprocating weight of a red dot sight, and you will get function issues. Somebody correct me if I am wrong, but for some reason I am thinking that Glock also did away with the window cut out in the top of the slide on Gen5s... on previous gens this also helps to offset reciprocating weight added by the longer slide and barrel...

    Like others have said, clean and thoroughly lube it, get some 124gr ammo or stouter 115, grip the gun tighter and see if that works. If not, if the gun is a range gun only, I would recommend dropping to a 15# recoil spring and 5# striker spring. That should cure it...
     
    Last edited: Sep 23, 2020
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  18. OdinIII

    OdinIII

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    I have 2 G34.5’s. Neither was reliable with the factory RSA with 115 gr Federal or Winchester White Box with my daughter shooting them and her grip is good for a young lady. After adding a red dot sight, neither was reliable with me shooting my 147 reloads at 890 FPS. I fixed them with a 13 lb spring and guide rod.

    They are just sprung a little strong. Stronger ammo or a weaker spring should fix it.

    On the perfection comment, it’s impossible to have a gun sprung perfectly for weak practice loads and strong defense loads at the same time. Anyone who tells you differently is lying to you.
     
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  19. MajorD

    MajorD

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    In a similar vein, shooting my reloads that worked fine in all my older 9mm’s, when I picked up a new Glock, were not enough to run reliably. I am very conservative with reloading ( if a load 1/10 of a grain above minimum runs, I don’t push it) but for that new Glock had to run a load at 1/10 of a grain below max. After the first 500 rounds or so, backed down to my original cream puff load and it worked perfectly again
     
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  20. voyager4520

    voyager4520

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    9mm Glocks are sprung for hot ammo - 9mm NATO. If you have an optic mounted adding even more mass to the slide you should be surprised if you don't have problems with light loads. I know it's hard to find ammo during the ammopocalypse but it should run fine with self defense loads or Speer Lawman. If you still have problems with hotter loads try replacing the extractor, it's uncommon but it can be out of spec and cause failures to eject and feed. Gen5's use a different extractor from previous Gen's so if you end up replacing it make sure you get a Gen5 9mm extractor.

    Also make sure it's lubricated.