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Double or single action?

DogwalkDogwalk Posts: 10 New Member
I'm confused. Why do people label a striker-fired pistol double-action, when it is really single action.
Now with a hammer fired pistol you have both single and double action, depending on the make and
model. There are also a very few double-action only pistols out there. Am I missing something here?
I've been an active gun user most of my 73 yrs. and still have a sizable collection and try to visit the
range at least once a month. Thank you, dogwalk


  • breamfisherbreamfisher Posts: 14,108 Senior Member
    Some striker-fired pistols use the trigger to simply release a fully-cocked striker, and are true single-actions, as cycling the slide fully cocks the striker. Springfield XD for example.
    Some striker-fired pistols use the trigger to fully cock and then release the striker, hence are double-action, as cycling the slide does not cock the striker at all and the trigger both cocks and releases the striker. Early Taurus 24/7 pistols are an example of this.
    Other striker-fired pistols use the trigger to finish cocking the striker and then release the striker, as cycling the slide only half-cocks the striker. Glock for example.
    Some striker-fired pistols are DA/SA in function, with cycling the slide will cock the striker, but if the striker impacts a dud round you can pull the trigger again and cycle the striker double-action. The Taurus OSS and later Taurus 24/7 pistols are examples of this.
  • SirGeorgeKillianSirGeorgeKillian Posts: 5,463 Senior Member
    Yup. Glock calls theirs a "safe action" pistol. It really is neither single or double action. The striker sits in a state of limbo until you pull the trigger which brings it the rest of the way back, moves the firing pin block out of the way and releases the pin all at the same time. Because of the rearward movement of the firing pin, it isn't single action. Because you have to manipulate the slide to reset the firing pin, it isn't double action.

    But in all practicality of it, the operation is similar to a single action, while the mechanics inside are closer to a double action.

    Confused yet :tooth:
    Unless life also hands you water and sugar, your lemonade is gonna suck!
    Wambli Ska wrote: »
    I'm in love with a Glock
  • DogwalkDogwalk Posts: 10 New Member
    Thank you all for these explanations. Even an old dog can learn a few things. dogwalk
  • mkk41mkk41 Posts: 1,932 Senior Member
    Hmmm , my KelTec P3AT has a hammer , which is normally at halfcock. Pulling the trigger thru brings the hammer fully back and releases it. BUT , if the round doesn't fire and the slide doesn't cycle , pulling the trigger again does nothing.
  • ilove22silove22s Posts: 1,539 Senior Member
    im curious as to why there are only 2 categories. did someone close the book on terminology? why not add as many as needed?
    The ears never lie.

    - Don Burt
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