The GUARDIAN is the Duty/Carry Trigger System you want When the shot counts. Made from 100% OEM parts. All metal parts are professionally polished to a high "Mirror Finish" for the best possible function. You will get improved super smooth take up that stacks into a nice firm wall. The break is crisp and clean with a quick positive reset. For Duty/Carry Use All metal components are hand polished to a mirror finish. Includes: Smooth Trigger w/ Trigger Bar / OEM / modified & polished Trigger Housing w/ Ejector / OEM polished Minus Connector / OEM polished Trigger Spring / OEM polished Firing Pin spring / OEM polished Firing pin safety spring / OEM polished Firing Pin Safety / OEM polished Spring cups / OEM