Midwest ERS Flip-Up Rear Sight
Midwest ERS Flip-Up Rear Sight, A2 style dual aperture, fully protected from accidental damage
Thick rugged pivot ears, twice as thick as the competition
Made from 6061 aluminum, mil-spec hard coat anodized
Locking detent with double the locking surface, for maximum strength
Same style windage knob as on the standard M-16, & M-4 rifles
Made in the U.S.A. with Lifetime Warranty