Just installed my PRP Drop-in Kit for XDm9
This was super easy to install. I only used a 3mm and a 4mm pin punch, so you don't need to buy any more than that. I took me about 30-45 minutes, that included one spousal interruption, some cleaning, and some rewinding of the Youtube video.
This is a great time to clean you pistol.
Before the PRP, my trigger had long take-up and the pull weight would seem to go exponential up to the break. Now, the take up is nice and short, the pull weight feels like about 50% (no gauge here) original, but it is much smoother, the pull also feels more linear.