The First Fully Adjustable ERGAL CNC Trigger with Military Scratch-Resistant Galvanization. FULLY ADJUSTABLE: The end user can customize and set the trigger system according to their preferences using the front screw located on the trigger's front and the rear part of the ejector. This feature is available for Gen 3, Gen 4, and Gen 5 Glocks, including Glocks 42/43/48 and X versions.