I finally picked up my RXM from the FFL today. The 'stealth gray' grip is actually a nice darker bluish-gray color than pictures of it suggest. Had I seen it in person first I might have been tempted to buy the full grip I ordered weeks ago in gray instead of black. Oh well. The black full grip has been installed and looks great. I also bought two 17-round Magpul mags that I really didn't need just to keep it sorta OEM. The compact gray grip and 15-round mags will be going up on the local gun trader site to recoup some costs since I'll never use them.
I also installed a Holosun SCS Carry-GR green dot mounted with a DPP Titanium indexing/filler plate. It uses the slide's dowel pin holes but not the dowels themselves. It fits perfectly and looks OEM. The sights aren't too tall and co-witness through the low-mounted Holosun in the window's lower 1/4 which is basically perfect.
The chassis system is pretty slick. It came apart and went back together easily, just a bit tight since everything's new. The trigger feels good (to me at least), heavy-ish and clicky and tactile which is my preference. We'll see how it shoots.
My only gripe so far is the grip. I thought it was great when I first got it but now that I've handled it, the 'half-octagon' shape to the front strap is a bit irritating to my uncalloused fingers. One of the stippled ridges needs to be knocked down a little with a file and it should be fine afterwards. There's also some rough spots and molding flash that needs some cleaning up.
