There have been some selling of some G17 smooth triggers on these boards lately and it has been said they will work in the G19s.... But the striker block raised ridge on the metal bar is different on the G17 than it is on the G19!!! I have tried this and on my G19 it works for a few shots, but after 4 shots or so it fails to operate and blocks the striker therefore causeing the striker not to strike the primer and results in a failure to fire!!! If you have installed the G17 triggers in the G19 you better check them out with alot of rnds test fired guys!!!