I have a couple sets of ARC M-BRACE rings on my Christensen MPR's, and they are amazing! I don't think I'll ever be buying traditional rings again. I mounted, leveled, and bore-sighted 2 rifles in the time it normally takes me to do 1. Plus, the fact that both the clamp and the rings use 55 inch-pounds makes things easy to remember. Also, using my Fix-It-Sticks setup with a multi-head, and then finishing up with a 55 limiter just to verify accuracy, made things stupid fast and simple.
Also, save yourself the headache of the traditional level kits, and get a set of these...
https://store.fixitsticks.com/products/bubble-level-set
It will save yourself the headache of ensuring your rifle is perfectly straight up and down, you can do things in the field if you need to, just make sure your levels match, and torque to spec. DONE!
The Works is multiple kits in one, can fix just about anything, anywhere and includes specialty tools for rifles, optics, pistols and shotguns.
store.fixitsticks.com