The Apex J-Frame Duty/Carry Kit is the next evolution of drop-in parts. Installation of this kit reduces the trigger pull of your S&W J Frame by approximately 3.0 lbs. from factory specifications. Includes Duty/Carry Rebound Slide Spring, Main Spring, Revolver Firing Pin and reduced Power Firing Pin Return Spring. *Not for use in the Bodyguard .38 revolver.