Build is now mostly useless; Verglas is essentially a better version of Cryotra (unless you want to deal less damage)

3xVigilante Mods to buff Primary weapon damage. [Vigilante Supplies] can now fit in the Exilus slot of the Primary Weapon, but if using a different Exilus mod, replace Hunter Track with VSupplies.

Swap the 3 Elemental mods to fit your use-case.
Good combinations:
Viral+Heat
Radiation+Cold