I have an Area 419 20 MOA now because it came on a rifle I purchased but I always used the MDT rail and it worked great. The only thing I would suggest is cut open a #8 lead shotgun shell and put 1 piece of lead inside each mounting hole before you tighten the mount down, so the grub screws won’t mark up the top of the receiver.
These are better yet than using a piece of lead shot: ht tps://www.mcmaster.com/brass-tipped-screws/ or ht tps://www.mcmaster.com/nylon-tipped-screws