The lightest Drop-in trigger pull and best Drop-in Self-Defense trigger pull all in one kit! 1- EDGE 3.5lb Connector1- 6.0 lb. Trigger Spring1- 4.0 lb. Firing Pin Spring (Target/Sport Configuration)1- 6.0 lb. Firing Pin Spring (Self-Defense Configuration)1- Reduced power firing pin safety spring RSR - REP100-142