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.
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.