This is a discussion on Where to find a holster for a ....well, not usual carry gun within the Defensive Carry Holsters & Carry Options forums, part of the Defensive Carry Discussions category; Anyone suggest a holster for this bad boy?...
HK P2000sk | Sig P238, 1911 C3, P232, P938 | Colt Defender, Mustang Pocketlite, 1911 | Rohrbaugh R9 | Kimber Covert Ultra II, Ultra CDP II | Browning Buckmark 22LR(suppressed| Kahr PM9 Black Rose |SW M&P C.O.R.E./Trijicon RMR
If you are looking for an IWB, I would recommend Concealment Solutions - Custom made concealment holsters, although there are many other great holster makers out there. You can talk to the owner/craftsman personally to discuss your specific needs. They do custom work at a very reasonable price (RMR, lasers, lights)
I have a Black Mamba CE, and love it (although I don't have an RMR on my gun).
"... advice is a dangerous gift, even from the wise to the wise, and all courses may run ill." -J.R.R. Tolkien
Try Panther Concealment Custom Kydex Holsters and Knife Sheaths E-mail Jim with a picture, He just did a FS 40 OWB for me, but I think it would work even with your sight. I would at least talk to him, these holsters are custom made and reasonably priced.
I bet Garrett can build you a Silent Thunder to accommodate that rig if you don't find something else.
"When Fascism comes to America, it will be wrapped in the flag and carrying a cross." - Sinclair Lewis
“You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.” - Naguib Mahfouz
I believe Dale Fricke has a Kydex rig in his line specifically for RMR equipped pistols.