The two thing's I've done that have improved the trigger greatly are shown in the video's I made below. Cleaning of the firing pin spring and striker guide, as well as installing a new striker guide that have done wonders. If you want to improve your trigger without spending money, go with the cleaning as it made a huge improvement in my PT111 G2's trigger, but to get rid of the sticking and also improve the trigger, I'd recommend getting the striker guide from Lakeline LLC. There's more you can do to improve this trigger, but I'd start off with a good cleaning!
Firing Pin/Striker Guide Cleaning:
Striker Guide and Firing Pin Springs Install:
Firing Pin/Striker Guide Cleaning:
Striker Guide and Firing Pin Springs Install:
