I’m surprised I haven’t seen this here yet:

Glock is now selling an upgraded trigger, the Glock Performance Trigger. Looks like its only available for 9mm Gen 5, but it converts the gun to single-action, 3.5 lbs with a flat face, for a C-Note.

Short Video: https://www.thefirearmblog.com/blog/...mance-trigger/

Read:
https://www.ammunitiondepot.com/blog...rmance-trigger

Long Video Pt 1:
https://m.youtube.com/watch?v=FhjuiDjrYrQ

Long Video Pt 2:
https://m.youtube.com/watch?v=6amAxjJb4sI

Short-ish Video on Gen 1-4:
https://m.youtube.com/watch?v=2P452uZ17KE