The Same Plane Low Profile Rear Sight is constructed of high quality 6061 aluminum" hardcoat anodized for a lifetime of service. The rear sight folds from the rear and locks in the raised position using a ball bearing pivot detent. A micro style windage knob features the same .49 MOA as on M16 rifles (.65 MOA on M4 rifles).

Features:
Sits only .4375" when folded
Folds to rear
Extremely low profile dual aperture design
Locking detent with large surface area for maximum strength
Micro style windage knob featuring the same MOA adjustments as the standard M-16: .65 MOA on M-4 type rifles / .49 MOA on M Type rifles