Food Court Apprentice
Semper Paratus certified AR15 armorer
LaRue makes a ring half for the RMR that is decent LT742. It puts the RMR at a real small rotation. Id wager round 30 degrees, maybe less. I had it on my 18" heavier barreled upper that has a 2-10 on it as the primary optic. I was pretty decent. Dont have to roll the rifle very far to get a dot image. I have offset BUIS on my LPVO carbine and there is a HUGE difference in how little you have to roll the rifle with the LaRue ring half. No matches with it, so cant comment on how effective it is under stress.