I can see that this thread is a couple of years old but because it is still on the first page of Google search I'm going to add.
I've installed one PRP Drop in and was extremely pleased with it. Used the Video that was provided and although I am NOT mechanically inclined was able to complete with no issues. This past weekend my wife shot my XDM 9mm 4.5 inch and she shot it so well that it's now hers. I've purchased another XDM, this one in 40 and just ordered a second PRP trigger kit.
I wan't to emphasis that I am not mechanically inclined but like trying to do things myself. Many times I am unsuccessful and that's fine. I like trying to do things myself for the fun of it. It's not a waste of range time, I don't mind paying for my mistakes. It's a hobby and obviously I didn't get into it to save money.
Besides gunsmiths love getting Bag O Gun deliveries.
