From Glock:
DETAILS
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
Here is a picture of the housing and connector as it is out of the box.
After a little work this is the polish I got on the trigger bar.
Other side.
Pay special attention to the surface that rubs the connector.
Also extra attention should be applied to the surface touching the safety plunger. Remember, you a polishing, careful not to remove too much material.
The factory Trigger shoe comes apart the same as all Glock trigger shoes.
I modify the safety as I describe HERE
Then put it all back together and install it!
Go Shoot!