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 sights Low-profile sights extend only .2" above top rail, don't interfere with primary optics or military IR illuminator /laser sight Ambidextrous sights easily and securely mount to Picatinny rails using a flathead screwdriver .50 MOA elevation and windage adjustments. Rear sight:3oz / Front sight:1.5oz