A question for those with a true to spec MK12 mod 0 upper. Are we running our optic in front of the arms 40 rear sight. Obviously using 22 medium rings the ocular housing doesn't clear. Anyone have any comments, I suppose using a 40l sp would alleviate this, but then the upper wouldn't be true. Just don't like how far forward by 2.5-10x24 is when mounted in the 22 M's.