365 not 365 xl with rds

I am looking for any information on getting a 365 slide milled for a holosun 507k. My understanding is that it uses the sig romeo zero footprint. I have been unable to find anyone that has had this done yet. Anyone know of any reputable companies that offer the slide milling for the 365? Anyone shooting a 365 with an rds other than the shield rms? Any experience or information would be appreciated. This handgun/rds setup would be used for off duty carry use.