For another receiver option, check out Custom Shooting Technologies. That’s what I built mine on. By the time you get a Brownells receiver and all the needed parts, you’re not too far off from one of these. I’ve been happy with mine.
https://cstrifles.com/product/cst-centr ... -receiver/
I used a carbon fiber barrel from McGowan with the bentz chamber. It also will not extract loaded rounds.