I have two:
38mm M-Brace with a MK5 3.8-16 TMR, 30MOA. First on large frame, could have gone shorter due to the smaller objective of this scope. You'll likely need the 38mm if you have the full size variants. Small frame, you'll need a longer stock for proper eye relief (PRS Gen3 extended out close to full length). Likely be selling this scope (scope, mount, flip caps, and competition dial). For small frame I would recommend a cantilevered mount as you will likely need it for eye relief.
38mm M-Brace with a USO B-25 52mm objective, 30MOA. Large Frame AR, works very well with ~.2" clearance with the bell housing. Scope cap will eat more clearance. FYI full length pic rail.
Height for check weld (for me) is ~1/4" Large Frame PRS Lite, 1/8" Small Frame PRS Gen 3, fully lowered.
I use the scope level and plumb bob for reticle alignment, verify 10 mills on a tall target, works every time. Just attended the GAP KC Match and making impacts at 994yds. K&M course with the MK5 makings impacts at 1200yds with 6.5 creedmoor.