They are CAD-sculpted, and then the prints are tidied up and moulded for the models to be cast in metal.
I think they look a bit "Wargames Factory" in terms of some of the detail and proportion.
That said, MERCS have used CAD-sculpted weapons since the Kem Var (second released faction), so it's not such a new process for them.
Anyway, I quite like the designs mostly, but the sculpts haven't quite convinced me yet. So far I have all the factions apart from the USCR (I hate the models!), but don't really play the game. I'll probably add the new Texico crew to my collection however.
@ tnjrp:
This might help more?