Flagaway&reg; EXCLUSIVE AR15 AR 15 Front and Rear 45 Degree Rapid Transition BUIS Backup Iron Sight Machined from lightweight, extremely durable, 7075 aluminum, Mil-Spec hard anodized Same height above bore as standard-issue M4 / M16A4 sights MOA elevation and windage adjustments Ambidextrous sights easily and securely mount to Picatinny rails using a flathead screwdriver Low-profile sights extend only .2" above top rail, don't interfere with primary optics or military IR illuminator /laser sight