(includes spring kit and improved sear lever) Custom Work - Price Includes Installation by Cylinder and Slide. You must ship your firearm to Cylinder & Slide to have this work done. This does not include reshaping and polishing of the magazine safety paddle surface. Without reshaping and polishing of the magazine safety paddle surface, you may feel grittiness in the trigger take up. To have the magazine disconnect paddle surface reshaped and polished, please add 9B049, $105.00.