Originally Posted by
Koshinn
This all also assumes the user is not planning on having a 3x magnifier or NVD mounted behind the red dot.
Also might want to try mount your RDS as far back as possible (with BUIS of course) then see how much of your strong-side periphreal vision is blocked with both eyes open. This blind spot is mitigated because between targets you're supposed to look over your sights to get a clear field of view, but while you're aiming, you won't see everything. This is also mitigated somewhat because of tunnel vision in high stress environments...