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-   -   S&W SD40 Trigger (http://www.firearmstalk.com/forums/f15/s-w-sd40-trigger-79270/)

rferguson61 12-24-2012 05:45 AM

S&W SD40 Trigger
 
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?

BWilder 12-24-2012 05:51 AM

the sd40 is striker fired.

rferguson61 12-24-2012 05:57 AM

Quote:

Originally Posted by BWilder (Post 1063976)
the sd40 is striker fired.

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

Garadex 12-24-2012 09:11 AM

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.

rferguson61 12-24-2012 09:27 AM

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

robocop10mm 12-24-2012 11:07 PM

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.

Garadex 12-25-2012 04:43 AM

Quote:

Originally Posted by rferguson61
But every pull of the trigger should cause the striker to fall? Even without the slide being moved?

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

hardluk1 12-25-2012 01:24 PM

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

AdamSean 12-31-2012 04:18 AM

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

robocop10mm 12-31-2012 04:21 PM

Quote:

Originally Posted by AdamSean (Post 1072877)
Striker fired pistols are considered DAO. Like the Glock. Personally, I prefer striker fired pistols for self defense use.

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"


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