Midwest Industries ERS Flip-up Rear Sight Black - MCTAR-ERS

Features: a A1 style dual aperture, fully protected from accidental damagea Thick rugged pivot ears, twice as thick as the competitiona Made from 6061 aluminum, mil-spec hard coat anodized to stand up to the most extreme conditionsa Locking detent with double the locking surface, for maximum strengtha Lock detent button with stepped down turns to provide a surface you can grab onto if your hands are muddy or weta Made in the USA