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Swapping uppers and lowers

Discussion in 'Gunsmithing' started by Ktmexperiment, Feb 27, 2010.


  1. Ktmexperiment

    Ktmexperiment
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    Jan 16, 2006
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    Somewhere in the mountains of TN
    OK, I'm sure this has been asked before, and YES, I tried searching, but not much luck on my specific question.

    Tonight, at work, I swapped a gen 2 and 3 upper and lower on 2 guns. One thing that's already baffled me, is gen 2 guns are supposed to only have 2 pins, but mine had 3, so the swap with the trigger set worked too.
    So, I wanted a gen 3 frame for the grooves and rail, but I wanted to keep my trigger set (modified trigger, and lighter connecter), and I didn't feel like fooling with swapping sights, so we swapped uppers too.
    Anyways.................everything lined up.
    Will this work? It cycles just fine, and everything seems to work. I can only tell a subtle difference..........the front block, and the extractor.

    Need some quick answers cause I'll be shooting an IDPA match this weekend.
     
  2. faawrenchbndr

    faawrenchbndr
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    DirtyThirty fan
    CLM

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    Nov 24, 2005
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    Troy
    What model are you talking about?
    A 2nd Gen Glock has TWO pins, the trigger pin & the trigger housing pin.
    I would guess that your "2nd Gen with three pins" is a Gen 2.5 Glock.

    Operation will be fine, but I would not want mismatched serial numbers.:whistling:
     

  3. Ktmexperiment

    Ktmexperiment
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    Joined:
    Jan 16, 2006
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    Location:
    Somewhere in the mountains of TN
    Yeah, i guess mine was an oddball in between.........it definitely had 3 pins.


    Shot it today, and seemed to do fine. The only weird thing is that I was shooting reloaded ammo. Jammed every other shot on the first stage of competition, but after that it did fine the rest of the day. I dunno if it was getting "seated" in or what the deal was.