21 to 10mm issue

Discussion in 'General Glocking' started by Glock36/.45acp, Feb 21, 2020.

  1. Glock36/.45acp

    Glock36/.45acp

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    ORIG posted on Gunsmithing forum, lotsa lookiloos but no help so far
    so
    Conversion barrel/20lb spring/10mm extractor/G20sf Mag
    My 21 is a gen3
    Fed and fired but ejected up and back on my head. If it did eject to the right, it was inches.. First round case was ripped at case mouth and dented on opposite side case mouth. Second round fired case pristine. Subsequent rounds dented on one or both sides.
    Any help appreciated
    Carry on
     
  2. slamdunc

    slamdunc JAFO

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    I did the same conversion using G20 magazines, the G20 barrel and a new RSA with no changes to the extractor/ejector and it ran great and ejected to the right just like it should.
     

  3. norcalAF

    norcalAF

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    Conversion barrel may not need extractor swapped as stated above, none of my conversion barrels need extractor swaps, all have been 100%.
     
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  4. buster55

    buster55 Senior Member CLM

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    Not Exactly the same but
    I did Gen.3 G30 To 10mm conversion
    Didn't change anything except used 10mm magazines so far so good
     
  5. QNman

    QNman Old timer

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    Pictures of the brass may help.
     
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  6. BRabbit

    BRabbit Millennium Member

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    Not a Gen 3, but I played around with mine which was a Gen 4, and I have it running great right now with a storm lake barrel, a G20 extractor, and g20 mags. I tried a Gen 3 recoil spring assembly with a 22 pound recoil spring, and then found out that it needed the original Gen 4 spring to run reliably.

    The biggest problem I had was that my barrel was out of spec and I sent it back and two months later they returned it and when I called them they said they had to throat and polish it. I suspect I would not have bought the recall spring assembly had the barrel been right the first time.
     
  7. Glock36/.45acp

    Glock36/.45acp

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    Thanks gents I did not know the conversion barrel may not need a new extractor.. I will pull the 20 I bought and try the 21 extractor and will report back. I will also post pics of brass
    Carry On