The Glock Performance Trigger 9MM meets the criteria for those looking for an enhanced trigger pull and ergonomics, all while utilizing a flat-faced trigger and maintaining the same safety features of the Glock Safe Action System. The GLOCK Performance Trigger is now compatible with 9mm Gen4 pistols. A Gen5 slide cover plate now ships with all GLOCK Performance Triggers, as an included replacement for Gen4 models that ensures compatibility and proper function. The GLOCK Performance Trigger will not come installed on any factory models. It is available as an accessory only and must be installed by a certified GLOCK Armorer. GLOCK does not recommend any aftermarket modifications to the GLOCK Performance Trigger. Product Features Trigger Pull Weight: 5lbs Flat Faced Trigger Product Specifications OEM Part: Yes Material: Steel/Polymer Does Fit: Gen 4-5 17, 19, 19X, 26, 34, 45, 47 Does Not Fit: Gen 1-3, Models Not Listed