[rferguson61]

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]

the sd40 is striker fired.

 

[rferguson61]

the sd40 is striker fired.

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

 

[Garadex]

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]

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

 

[robocop10mm]

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]

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]

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

 

[AdamSean]

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

 

[robocop10mm]

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"