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.Finish: Stainless/GreenModel: Spring KitMaterial: Metal