ricksone, I remember before the PRP trigger bar came out.
I was one of the firsts (if not the first) to realize how to limit the trigger bar to "fix" the xd trigger back in late '06. If you can dig far enough in the archives at xdtalk, you'll find the pics and discussion on it. I had an opportunity to patent it, but didn't have the extra $10,000 laying around to do so.
I was also the first to make an extended slide release for the xd as well.
On an unrelated note, I also have a storm lake 9mm conversion barrel and magazine for my xd40 tactical. The 40 cal and 357 sig magazines are the same.