You will not be able to run the sheet metal shield that comes with your Romeo 1, with this milling.
This will allow you to mount the Sig Romeo 1 red dot directly to your standard frame Glock (G17, 19, etc.) This program will leave the rear dovetail, and the top of the integrated rear sight is .260" above the top of the slide. Pictured is the Dawson .260" front sight which we carry. This will cut holes for the 6-48 screws which come with your Sig Romeo 1.
This program will NOT work with the Sig Romeo 1 Pro!