This drop in kit produces a smoother trigger pull and improved reset along with lowering the trigger pull weight from 8 to approximately 5.5 lbs. Specified for Duty/Carry use, this kit is the perfect compliment to any Smith & Wesson SD pistol. For use in the S&W SD line of pistols (i.e. SD9, SD40, SD9VE & SD40VE)*
Kit contains (1 each):
Apex Trigger Return Spring
Apex Striker Block Spring
Apex Striker Spring
Apex SD Slave pin (to assist installation of TRS)