I like it and it's twin which is a centerfire chassis. I built it as a rimfire trainer that mimics the other one but since then, for various reasons, I have begun to shoot rimfire more than center fire.
If your going to use this as a PRS/NRL22 set up I can give a couple of tips from what I learned. Biggest issue is balancing it.
If you're changing the barrel use the heavier choice. That barrel is an .850 dia. I should have got .910. The one in the Pic has all the bells and whistles for adjusting the butt stock, that's awesome but you'll have to counter weight the forearm to offset all that steel hardware. So save money and get the more basic butt stock.
As far as action screws, their included.
As far as torque, experiment, find what yours wants rimfires can be picky.