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Discussion Starter · #1 ·
While I have taken my Glock apart and replaced springs, I am not really sure how trigger works. Specifically: is firing pin spring compressed when you pull trigger or is it compressed from cycling of slide? What is function of trigger spring: to provide resistance for trigger pull or to "reset" trigger in forward position? Thanks in advance for your help.
 

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The striker spring (firing pin spring) is compressed on the final part of the trigger pull ("second stage"). The trigger bar pushes it back and then cams down to let the striker loose to fire the gun.

The trigger bar spring does two things. It helps in reset and also reduces the trigger pull needed...it helps to draw the trigger back.

The first "stage" of the trigger pull depresses the safety plunger.
 
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