i just ordered my first pred head from mannowar and i've been working on a mandible system to try out in this mask, and once i get all the quirks out i'll let you know, but i can tell you, it will be simple (but effective), self contained, non-electronic, and NOT THOUSANDS OF DOLLARS FOR SOMETHING DANGEROUS AND UNRELIABLE! anyway i'll certainly put a thread up once i get the mask and start applying simple mechanics, should be awesome, as long as i can do what i'm pretty damn sure i can do with it, we'll all be in business