Negative Ridge Runner, only the SOCOM II has the quad rail, you can buy it separately for all other M1A rifles from VLTOR but it costs in the neighborhood of $300 and weighs too much IMO.
EdInk, what are you using it for? I too have a Scout Squad, using an EOTech 512
Red dot sights and long eye relief scout scopes will work great on the existing scout mount. However, if you prefer a traditional style scope you will need a mount that screws into the side of the receiver, such as an ARMS 18 or Sadlak Industries, and a cheek riser.