US-DEALS EXCLUSIVE AR15 AR 15 Front and Rear 45 Degree Rapid Transition BUIS Backup Iron Sight Ambidextrous sights easily and securely mount to Picatinny rails using a flathead screwdriver MOA elevation and windage adjustments Same height above bore as standard-issue M4 / M16A4 sights Machined from lightweight, extremely durable, 7075 aluminum, Mil-Spec hard anodized