Re: Thanks Frank!!!
I'm thinking that it should be possible to fabricate uppers, lowers, etc. from heavy guage metal stampings. Between die cutting and shape stamping, I don't think there's anything incompatible with good accuracy and cost savings. The design's the thing, and honestly, I just don't think the concept has been done with any serious interest in accuracy, yet... The initial tooling outlay could be formidable, but production costs should be very agreeable for longer runs.
Greg