That is a great article with lots of good information. I bought mine and have nothing but praises for my PF9. I have had many P3ATs and all were great, too. Another great pocket pistol; won't, of course, replace my R9, but it does have it's place. I installed the P11 metal guide rod and the pinky extension which really helps. Hope Keltec gets some night sights as I am partial to them. I'm out.