Newly Released Midwest Industries Low Profile Flip Up Dual Aperture Rear Sight. Thick rugged pivot ears. Locking detent with double the locking surface, for maximum strength. Manufactured from 6061 aluminum, and mil-spec hard coat anodizing, to stand up to the most extreme abuse. Micro style windage knob featuring the same MOA adjustments as the standard. Sight sits .4375" when folded.