There is a new trigger system in prototype right now. Was announced last week. Might wait and see.
As far as upgrading a Glock, you do you. Dont listen to anyone saying anything else.
Hmm....might have to talk with my XDM10 4.5 OSP that sees use during the winter months while hunting. All these years and it has went boom every time I asked it to. Even mornings when the dot is crusted over with ice.