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Are Glock pistols double action?

Discussion in 'Handguns: Autoloaders' started by Miamitiger, Jan 26, 2007.

  1. Miamitiger

    Miamitiger member

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    I am new to pistols. I am planning to buy a Glock. Can you cock the trigger and shoot like a revolver?
    Excuse my ignorance, your help will be appreciated.
     
  2. Onmilo

    Onmilo Senior Member

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    No, a Glock is not doble action.
    It isn't even double action.
    You can't cock the trigger, nor can you even cock the hammer because this is a modified striker fired design.

    The Glock uses some aspects from other pistol designs but for the most part the overall functioning is a unique stand alone design. Hope this helps.
     
  3. CountGlockula

    CountGlockula Senior Member

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    Here you go:

    http://www.findarticles.com/p/articles/mi_m0BQY/is_10_47/ai_78130004

     
  4. SDC

    SDC Senior Member

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    Contrary to what's posted above, a Glock ISN'T cocked until you pull the trigger; unless you pull the trigger, the striker remains in a forward position. What the Glock design DOESN'T have is what's called a "second-strike capability". That is, if you squeeze the trigger with a live round in the chamber, and that round doesn't fire, pulling the trigger AGAIN won't do anything, since the Glock requires the slide to cycle to reset the trigger-bar in position to cock and release the striker again. In this case (just like you should do with any OTHER semi-auto with a dud round), you need to tap the magazine in to make sure it's seated properly, rack the slide to eject the dud and load a fresh round into the chamber, then fire.
     
  5. gunguy05

    gunguy05 New Member

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    A glock is both "pre-cocked", and a double action. The striker is pulled just slightly rearward under the tension of its own spring when the slide is allowed to go forward. However, when you pull the trigger you add an additional "cocking", if you will, to the striker. This is what makes it double action.
     
  6. 9x19

    9x19 member

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    No, they are not... they're Safe-Action... just like it says in the brochure! :evil:
     
  7. Geronimo45

    Geronimo45 Senior Member

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    "a Glock ISN'T cocked until you pull the trigger"
    It's semi-cocked when the slide goes back. The trigger cocks it the rest of the way. It's closer to SAO - a true DA gun allows second-strike capability.
     
  8. Steve C

    Steve C Senior Member

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    Definition:
    double-action trigger performs the two functions of cocking and then releasing the hammer or striker.

    IMO the Glock is a double action pistol. The striker being partially retracted or the innability to perform a second strike with out first retracting the slide isn't pertinent to the defining function of the triggers action.
     
  9. Geronimo45

    Geronimo45 Senior Member

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    "isn't pertinent to the defining function of the triggers action."
    I guess you could say that - but the partially-cocked and the light trigger pull seems more akin to SA IMO. Could be wrong, but I'm guessing that most DA guns prior to the Glock had second-strike capabilities, which is why I consider that 'true' double action.
     
  10. JohnKSa

    JohnKSa Senior Member

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    The striker is a good deal farther back than "just slightly rearward"--it's about halfway between its fully forward and fully rearward positions before the trigger is pulled. The trigger pull completes the cocking (about half or a little more than half of the stroke by length of compression) and releases the striker.

    The trigger, EXTERNALLY, behaves like a long throw SINGLE action trigger since the slide must operate to half-cock the striker between each trigger pull. If all you had to go on was the way the trigger acts (without looking inside the gun) you'd have to classify it as single action.

    INTERNALLY, it operates like a hybrid of a double action and a single action. About half the cocking operation is done by the slide, the other half by the trigger.

    The benefit of that is that the gun is never fully cocked unless the trigger is pulled nearly all the way rearward. Glock says there's not enough energy in the striker spring to fire the gun during the half-cock position before the trigger pull begins. In that respect it's like a double action.
     
  11. MCgunner

    MCgunner Senior Member

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    A Glock is "safe action" despite how safe it may actually be. :rolleyes: It is NOT pure DA nor is it SA. It is what it is and Glock calls it "safe action". It cannot be "cocked", of course, because it has no hammer, only a striker, sorta like the RG26 I had, another fine striker fired design:barf: , just that the striker in a Glock is pre-cocked.

    As you might can guess, I don't care for "safe action" for carry. Glock is a high quality product otherwise, always works, quite accurate. If you like "safe action", go for it. I'll pass, though. If I really wanted a "safe action", I'd get a Springfield Armory XD with the grip safety.
     
  12. Onmilo

    Onmilo Senior Member

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    Think of the Glock this way.
    A 1911 series 80 with the hammer on half cock and the safety engaged.
    You pull the trigger and it 1. releases the thumb safety automatically and 2. it brings the hammer to full cock position and 3. when the trigger reaches its rearmost position it drops the hammer and also moves the firing pin lock out of the way allowing the gun to fire.

    It isn't double action and it isn't single action, it is a unique design all its own.
    So unique other manufacturers have now began to copy the design in one form or another.
     
  13. varoadking

    varoadking Senior Member

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    Not exactly...

    [​IMG]
     
  14. SDC

    SDC Senior Member

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    Just like a woman is semi-pregnant, up until the point when she actually BECOMES pregnant?
     
  15. JohnKSa

    JohnKSa Senior Member

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    Cute but inaccurate analogy. As already mentioned, Glock states that there is not enough energy in the striker spring to fire the gun when the gun is in the "semi-cocked" state achieved by racking the slide.

    And that's beside the fact that there are at least 3 parts preventing the striker from moving forward until the trigger has been almost fully compressed.
     
  16. RevolvingCylinder

    RevolvingCylinder Member

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    CountGlockula, I recall S&W making many true DAO 3rd generation pistols.

    To me, the trigger mechanism in the not-quite-DA has the disadvantages of DA and SA without the key advantages of either.
     
  17. ugaarguy

    ugaarguy Moderator Staff Member

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    According to the BATFE Glock pistols are Double Action. According to the terminolgy in the latest US Military RFI (Requests For Information) and RFP (Request For Proposal) Glocks fall into the ambiguous category SFA - Striker Fired Action. I think of them as striker fired, that operate in a modified DA manner. The old definitions just don't fit the mechanisms as well. Just understand how it operates and become comfortable with it.
     
  18. RON in PA

    RON in PA Senior Member

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    Whatever the Glock is, this is certain, the Glock trigger pull is the same, from shot to shot. That makes for easier training.
     
  19. Mad Chemist

    Mad Chemist Senior Member

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    Yes.

    Well technically, no.
     
  20. Chris Rhines

    Chris Rhines Senior Member

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    And there ya go. The traditional terms "Single Action" and "Double Action" don't really apply to guns without hammers.

    - Chris
     
  21. Odd Job

    Odd Job Senior Member

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    What is a concise definition of a striker-fire mechanism? (Sorry to ask a noob question like that)
     
  22. MAKster

    MAKster Senior Member

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    pre cocked

    IIRC the Glock is approximately one-third cocked so it would be considered double action. The XD is around 95 percent cocked so people refer to it as single action. In reality the trigger feel is about the same. The double and single action terminology for striker fired guns is not as simple as with guns that have exposed hammers like revolvers.
     
  23. Alan Fud

    Alan Fud Senior Member

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    Despite what they were called, the S&W models weren't true DAO eithers. For those that disagree, please explain what two actions were performed by pulling the trigger during a second strike pull?
     
  24. hnm201

    hnm201 Member

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  25. shermacman

    shermacman Senior Member

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    As you can tell, your original post has now been answered perfectly!
    Yes
    Kind of
    No
    :cool:
     

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