I'll pass. I want to build one as I want.I have never heard of this project. I guess they started with the first version in 2017 and now have a newer version that is going to be carried by Brownell's.
https://www.brownells.com/guntech/wwsd2020/detail.htm?lid=17958
I'm not sure what to think of the polymer lower, grip, and stock all in one piece but they might be onto something here with a lightweight (and pricey) alternative to the original design.