Odanan, on 11 August 2014 - 09:53 AM, said:
Strum?

I have no inside info, and MonkeyDCecil already listed the available variants plus the 3L (which isn't supposed to be available until 3051, versus the game being (re)set to 3049).
So, my guess would be the VND-1R (the basic energy/missile variant), the VND-1X (the ballistic-equipped variant), the VND-1AA ("the fast one"), with the Hero 'Mech probably being either the St. Ives' Blues (piloted by Michael Jones, from TRO 3025 & TRO 3039) or Chuong Vong's modified "VND-1R (Vong)" (from TRO 3039).
The VND-1SIC could also be an available common variant, if the St. Ives' Blues isn't chosen as the Hero 'Mech.