G20 problems.

Discussion in 'General Glocking' started by jp3975, Feb 18, 2010.

  1. jp3975

    jp3975

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    It had been a year or so since I shot my G20. But back then it was nearly 100% reliable.

    Few weeks ago I took it out to shoot and it jammed almost every round with UMC ammo...which was a huge pain because I was qualifying for level III security. My fault though for not shooting it before I went.

    I also had a box of reloads...that were random reloads. All 180gr but random brass and bullets. I think 3 combinations.

    I cleaned and lubed the gun with winchester clp before I shot it again. I didnt over oil it either.

    I went to shoot the reloads and the same thing happened. I know Im not limpwristing because I shot it from a rest part time with the same results.

    The most times it fired reliably is 4-5.

    Id like to shoot it once more before I send it to glock to make sure it wasnt an ammunition issue. Anyone want to recommend an ammo brand thats known to be reliable in G20?

    ...though I do have a .40 barrel comming if lw ever gets it here. I could see how that works as well since I have lots of .40 on hand.

    Any thoughts or ideas as to what it might be or advice would be appreciated.
     
  2. FuerGrissaOstDrauka

    FuerGrissaOstDrauka

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    I never buy Remington ammo, because of experience with UMC ammo, if that tells you anything.
     

  3. faawrenchbndr

    faawrenchbndr CLM

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    While Remington UMC is lower quality ammo, I've never had any issues.

    Try QUALITY ammo, Federal, Speer, Winchester, not WWB.
    Also were these malfunctions with more than one magazine?
     
  4. jp3975

    jp3975

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    It was with the two magazines that came with it. Though I thought that was the issue at first because once i changed mags it shot several times with no jams...but then reverted to jamming.
     
  5. NW-Warlord

    NW-Warlord

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    Mmmm...Jam... raspberry or strawberry? Is the chamber clean? I have had issues with guns having a dirty chamber and having FTE or does not return to full battery.
     
  6. jp3975

    jp3975

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    Its clean.
     
  7. Meathead9

    Meathead9

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    What do you mean by Jam? Failure to eject? Double Feed?

    I recently put 200rds of UMC through my G20SF with no issues. Not saying it wasn't the UMC, just stating I haven't had any problems with that particular ammo.
     
  8. jp3975

    jp3975

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    The slide locks back and simply requires that I pull the slide back and put a new round in.

    So i guess maybe its not technically a jam.
     
  9. AustinTx

    AustinTx

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    Everyone knows it's caused by LW, the cause of all Glock jamm.
     
  10. 1006

    1006

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    I think it is just your grip. Your thumb may be hitting the slide lock. Try shooting left handed and see if the problem goes away. If it does not, it may be the slide lock lever's spring is worn or the slide lock lever is not installed with the spring in the right place.

    Good Luck
     
  11. Brent10mm

    Brent10mm

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    1. get something other than rem umc, its pretty weak stuff, and may not fully cycle.
    2. have a buddy shoot it, see if your grip has changed?
    3. pics...?
     
  12. Dave T

    Dave T

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    That's not a "jam" or a malfunction (proper terminology). It's an operator induced stoppage. You admit not shooting it for some time. You grip has changed and you are bumping the slide stop, probably from a shifting grip after 4 or 5 rounds because of poor technique. A more solid, locked two hand grip with some attention to where you put your thumbs should solve the problem.

    Dave
     
  13. G36shooter

    G36shooter

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    What recoil spring are you using? stock? or heavy aftermkt.?
     
  14. cowboywannabe

    cowboywannabe you savvy?

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    make sure the slide lock spring (wire) isnt broken.
     
  15. G33

    G33 Frisky! CLM Millennium Member

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    Thumb/s are problem...66% sure.
    :supergrin:
     
  16. jp3975

    jp3975

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    Could very well be. I'll pay attention to this next time i shoot. Thanks.
     
  17. jp3975

    jp3975

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    Gun's stock save for an ss guiderod and an arotek slide stop.
     
  18. Maine

    Maine

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    lol :supergrin: and I agree. Have your thumbs removed to be sure.
     
    Last edited: Feb 19, 2010
  19. rd3

    rd3

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    That's ridiculous! have a buddys thumbs removed and get him to try it first. Then and only then, if it works have your thumbs removed.
     
  20. Dave T

    Dave T

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    BINGO! That contributes to the problem in that it is more vulnerable to being bumped.

    Dave