Not sure if a dumb question but here goes. Got a Trijicon MRO for one of my ARs for Christmas. I currently have an extra Geissele base I got for an Aimpoint T2. Are the mounting holes mostly universal for RDS? I'd mate it up to see but since our move to OK the extra Geissele is packed away somewhere in the garage or in storage and would rather ask to see if anyone knows or if i need to go on a hunt tomorrow through a million boxes because it will work. Or, are the mounting holes all different dependent on the manufacture? Thanks for the help.