2 moa, kinda of self explanatory, at 100 yards the dot either gives you 2" or 4" of MOA. Not that a red dot is a precision sight, but I would rather have the 2".
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Witch Doctor</div><div class="ubbcode-body">Not that a red dot is a precision sight, but I would rather have the 2". </div></div>
+1 Both dots are very visible, even in broad daylight. I prefer (and bought) the 2.