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Gen4 G19 Slide not locking back

Discussion in 'General Glocking' started by Lotos, Apr 21, 2012.

  1. Lotos

    Lotos

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    Has anyone experienced this problem with the new Gen4s? On all 3 of my stock magazines that came with the gun only about 20% of the time does the slide lock back on the last round.
     
    Last edited: Apr 21, 2012
  2. ZekerMan

    ZekerMan ZekerMan

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    Have you had it stripped for cleaning and if so have you placed the spring of the slide lock under the pin so it operates properly?
     

  3. Lotos

    Lotos

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    Well i purchased this gun a few weeks ago and noticed this right out of the box with factory grease on it. I put only about 150 rounds through it. Today i put another 100 and had the same issue. I still haven't lubed it; i don't have my gun stuff with me currently. Im not sure what you refering to about the spring/pin for the slide release/lock, i know very little about Glocks - this is my first (im a 1911 guy).

    I think i may actually be riding the release while shooting which may cause the issue.
     
  4. Rustin

    Rustin

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    Your probably right. I came from 1911's, and I would ride the thumb safety. The Glock's slide stop is in the same position relatively speaking and I would ride it and get the same malfunction. Try checking your grip, make sure your not pressing down on the slide stop.
     
  5. GRT45

    GRT45 Transform & Win

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    Bingo...that is the most likely cause of the symptoms you described, especially for an experienced 1911 shooter moving to a Glock for the first time. If possible, try shooting left handed for a few mags and see if the problem disappears. That will verify the theory of a problem with your grip and thumb position.

    BTW, welcome to Glock Talk.
     
    Last edited: Apr 21, 2012
  6. Lotos

    Lotos

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    Thank you for the welcome, aside from a possible bad grip I'm loving my glock - no real problems and i feel the thing shoots like a laser beam. The FDE frame doesn't hurt either :)
     
  7. DannyR

    DannyR Moderator Millennium Member

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    "Operator Thumb" has been known to cause frequent problems with Glocks of any age/generation. Only permanent cure is amputation.:rofl:

    Try this:
    1. Insert an empty magazine into your pistol.
    2. Rack the slide back.
    3. Does it lock open?
    4. Repeat with all empty magazines.

    Also, the owner's manual suggest that you oil your new Glock. Pay attention.
     
    Last edited: Apr 21, 2012
  8. Lotos

    Lotos

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    yes all the magazines properly lock the slide open when racked manually.
     
  9. DannyR

    DannyR Moderator Millennium Member

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    You have just proven that:

    1. It is not the slide stop lever
    2. It is not the magazine follower
    3. It is not the magazine spring

    That only leaves your thumb, a heavier than stock aftermarket recoil spring assembly or really weak ammo.:whistling:
     
    Last edited: Apr 22, 2012
  10. MikeG36

    MikeG36

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    Congrats and welcome to GT. Good advice given above. Enjoy your new pistol.