Sig Sauer ROMEO5XDR 1x20 mm Closed Red Dot SightsROMEO5XDR compact red dot sights provide civilians and armed professionals a robust 1x aiming solution for any situation. Ultra low parallax so point of aim is point of impact and the red dot remains parallel to the bore of your firearm, no matter what your viewing angle is relative to the optical axis of the sight. Unlimited eye relief allows you to acquire the aiming point and the target regardless of the position of your eye behind the sight.