The GLOCK Performance Trigger 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. - Trigger Pull Weight: ?5lbs. - Fits: Gen4 and Gen5 models G26 G19 G17 G34 and models G19X G45 G47