Yes, they use MIM parts, but that's no different than Kimber.
What does this mean?
One of the common complaints that I have seen about Para's is that they have a weak finish. That can be resolved if it turns out to be an issue, with some Cerakote, but something to be aware of when examining a potential purchase.
If I were hunting for a 1911, I'd give hard look at the Ruger.