Converted my 96D to a 96FS. Required a new slide, sear, sear spring, hammer, and hammer release lever. Bought a new sear pin (didn't need it) but was able to use the old one. only a couple bucks so no big deal. Could only find a slide for a 92FS which required disassembly and machining of recessed area around finring pin hole to accept the 40cal. Used the extractor from the 96. So now my M9 and 96 function exactly the same and I'm extremely happy with both. Also installed a Laser Max Guide Rod in the M9. Replaced the original guide rod and has a pushbutton on both sides of gun located in the slide release mechanism which was included with the laser. Really nice.