MI ERS Flip-Up Rear Sight FDE

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 to stand up to the most extreme conditions
Locking detent with double the locking surface, for maximum strength
Lock detent button with stepped down turns, to provide a surface you can grab onto if your hands are muddy or wet
Same style windage knob as on the standard M-16:
.65 MOA on M-4 type rifles / .49 MOA on A-4 type rifles
Made in U.S.A. with Lifetime Warranty

Weight 2.5oz