Made from 6061 aluminum, the Midwest Industries, Inc. ERS Flip-Up Rear Sight is made in the U.S.A and comes with A2 style dual apertures.
- 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
- 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 the U.S.A. with Lifetime Warranty