The brain's visual systems are asked to align a circular rear aperture with a rectangular front post shape while simultaneously ignoring the "ears" that protect the front sight post.Dynalign's circle-within-circle sight picture allows for faster sight picture acquisition. Additionally, the use of a front aperture further reduces parallax effect which makes accuracy less dependent on precise sight alignment. Dynalign is a faster and more accurate sight picture that can improve shooting performance. FeaturesC4 Flip-Up Front SightOuter and inner concentric circles for easy target acquisition Windage adjustable for zeroing on the front sightTool-less elevation adjustment that is always perfectly concentric with outer circleAperture sight gives a shooter the ability to focus 100% on the targetStrategic use of materials to maximize strength and weightWindage - 40 MOA Total, 1/2 MOA/ClickElevation - 28 MOA Total, 1-1/4 MOA/1/4 TurnC4 Flip-Up Rear SightA purely conce...