This is a Glock factory OEM smooth face stock shoe that has been drilled and tapped for pre-travel reduction. The  tapping process is designed so the stainless steel set screw will self seize at it's desired position.  The face of the trigger safety tab has been reduced to lay flush with the shoe face. The frame engagement point of the trigger safety tab has been modified to accommodate the pre-travel reduction. NOTE: this tab modification should not be altered as it is designed to correspond with the drop shelf ensuring the trigger is drop safe. For G44 order Gen 5 variant