This single plane A2 AR-15 front flip up sight is for use with standard height AR-15 rear sights and locks positively in the up position. This low profile flip up rear sight is made from black hard anodized aircraft grade aluminum with steel ball bearing pivot detent and hardware to automatically locks into position when raised. The Flip-up posi-lock design to guarantee zero every time through the A2 front sight post. Quick detachable with adjustable A2 square post. Use Same plane as hand guard / upper receiver height. Limited lifetime warranty.
We suggest you get Item # MT201 AR15 Flip-up Rear Sight Designed To Work With This One.