S&W SD40 Trigger

Discussion in 'Semi-Auto Handguns' started by rferguson61, Dec 24, 2012.

  1. rferguson61

    rferguson61 New Member

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    My dad has a S&W SD40 that i took apart and cleaned. I thought they have a DA trigger. After in put the side back on and pull the trigger the hammer releases...but then i pull the trigger again the hammer doesn't fall. Am i miss remembering?
     
  2. BWilder

    BWilder New Member

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    the sd40 is striker fired.
     

  3. rferguson61

    rferguson61 New Member

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    Soooo to sound like a tard....meaning?
     
  4. Garadex

    Garadex New Member

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    It is basically a single action with a long heavy pull. When a round is chambered it partially cocks it and the trigger pull fully cocks and then releases the firing pin. It results in a better than double-action only trigger but worse than a single-action trigger.
     
  5. rferguson61

    rferguson61 New Member

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    But every pull of the trigger should cause the striker to fall? Even without the slide being moved?
     
  6. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    The reciprocating action partially cocks the striker. Few striker fired guns allow a second strike on the same cartridge. Many makers call their striker fired guns "double action" or "double action only". To me this is a serious misnomer. The term double action refers to a mechanism that can be fired two different ways; manually cocking (with your thumb) or trigger cocking (think Smith and Wesson revolver). They have used a term familiar to shooters to describe the "feel" of the trigger, when technically it is incorrect.
     
  7. Garadex

    Garadex New Member

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    As said it partially cocks when the slide closes after cycling.
     
  8. hardluk1

    hardluk1 Active Member

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    No ammo , rack the slide ,pull the trigger one time, rack and repeat, again No DA trigger
     
  9. AdamSean

    AdamSean New Member

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    Striker fired pistols are considered DAO. Like the Glock. Personally, I prefer striker fired pistols for self defense use.
     
  10. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    And I think the term DAO is a misnomer. Double Action is TWO actions. DAO is ONE action. It is an attempt to simplify the naming process like calling all Armalite pattern rifles "AR-15's"