Midwest Industries MCTAR ERS Flip-Up Rear Sight

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.

Features:

• 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