The manufacturer does not state if the Vltor M1-S: M1A, M14 Improved Stock System will work with the Springfield OEM barrel shroud. I recommend contacting the manufacturer for that information.
The Vltor M1-S: M1A, M14 Improved Stock System does not include the top rail. The rail system can be found at the link below.
https://www.opticsplanet.com/vltor-casv-14-m14-rail-system.html
This is what the manufacturer says in regards to compatibility of the Vltor M1-S: M1A, M14 Improved Stock System. "The M1-S stock will fit most M1A/M14’s with standard profile barrels. Out of the box, the M1-S stock will not fit M1A/M14 rifles with the following features: medium contour barrel, heavy contour barrel, National Match barrel, additional/improved bedded lug, M21 and M25 type rifles. Please keep in mind that this stock system exists in Semi-Auto and Select Fire variations. Please make sure that you select the correct stock for your application at the time of purchase. "
The Vltor M1-S: M1A, M14 Improved Stock System does not have a place to mount a bipod. However, the M1A stock listed at the link below has an accessory rail that you could mount a bipod too.
https://www.opticsplanet.com/pro-mag-archangel-m1a-precision-stock-for-springfield-m1a-m14-black-polymer-aam1.html
Yes, the Vltor M1-S: M1A, M14 Improved Stock System will fit a Springfield M1A Tanker model.
Yes, that scope mount will be compatible with the Vltor M1-S: M1A, M14 Improved Stock System.
Yes, the Vltor M1-S: M1A, M14 Improved Stock System will work for an M1A Scout Squad.
Yes, the Vltor CASV-14: M14 Rail System will work on a Springfield SOCOM II. This rail system will not interfere with the factory stock or rail.
Yes, it would work.
Yes, the Vltor M1-S should fit any commercial M1a.