I know there have been a lot of external extractor problems discussed in the forum. Just thought I would report that I've fired about 700 rounds through a Pro Raptor II I bought about a month ago. I've only used Winchester 230 grain FMJ whitebox ammo in it, and it has functioned fine: no extraction problems. A couple of times during the break-in period I had jams, where a round stovepiped being chambered, but not in the last 200 rounds. I still occasionally get a piece of spent brass in the face, but that's it. The advice from Kimber, in the owners manual, is to use only oil on it, but I have been using Tetra grease (light application) on the rails, and FP-10 everywhere else. I field strip and clean it thoroughly after every range session. The weapons fires as good as it looks.