Take pictures and measurements and find a custom holster craftsman, whether leather. You will have to do the wet molding yourself though. With kydex they will need your setup to mold the holster.
For leather they will need measurements all the way around the gun including the thickness of the slide frame and trigger guard, also need them for the light attached.
I suggest do a tracing, take a picture, put the stats on the tracing and mail with the picture. Also add pictures of what you want if you can find them on the net.