Tank:
Primary: Sabot Shell
Secondery: Coaxial HMG or Guided Shell
Countermeasure: Active Protection
Optics: Thermal
Upgrades: Reactive Armor
LAV:
Primary: APFSDS-T Shell
Secondery: TOW Missile
Countermeasure: Active Protection
Optics: Thermal
Upgrades: Reactive Armor
As Gunner:
Optics: Thermal
Gunner Upgrade: Soflam or incendiary (it depends on the situation and driver, but I really like to burn everyone hehehe)