Yes, the flat packs for the MTM's are available, I have a few pairs in stock , can get more made if needed. They are $239.00 plus shipping from 98844 in approx a 50 lb box.
The wave guide is totally different from the face plate, for any of the NX seris (Ottica, Ottica mtm, or NX-Treme) , the waveguide is required.
jay