I have recently purchased some of their parts for the gun. To start off, I really like their rear sight. The WC rear sight looks aggressive and has some nice serrations on it for contrast and a deep U notch, although its a bit wide making it less accurate but fast. I bought the .270 (I think is what comes standard with the M9). The dove tail is pretty over sized so I had a lot of filling to do but once installed it was dead on at 25m. I even tried it at about 200y? and was excited to hear a constant "plink" at a steal plate (the serrations/contrast help)! but again the wide notch is a bit difficult but this has been my favorite 92 sight thus far. My second favorite has been the low profile safety. Its kind of like the one on a PPK though kind of tough to engage and disengage but its worth practicing with. For the first time I can rack the slide normally without accidentally placing the gun on safe or having it dig into my palm. The Mag release has also been nicer though is still hard to push and feels strange, I cant really explain but its an improvement. Lastly the short reach trigger. Its basically a standard steel trigger with about an 1/8" shaved off the face, though its definitely noticeable. It feels like your pulling extremely far back on the trigger. I have small hands but I'm still getting used to it. The only thing I don't like about it is the finish. It has a some grip to it and really tears up your trigger finger, especially, from double action. Polishing it or dipping your finger in some oil might help. Overall the parts are really nice. I'd say just buy the parts and install them your self, polish the sear and get a wolf trigger spring and D hammer spring. It'll be cheaper. If your .mil, WC has discounts, if not go through some you know.