Front/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 1/2 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 Not anymore. Rapid Transition Sights (RTS) provide shooters with the quickest possible transition between longer- and closer-range target acquisition, greatly increasing their efficiency and effectiveness in battle and competition. These sights mount directly to a weapon's Picatinny rail, offset from center by approximately 45 Degree. This unique offset position makes transitioning from optical to iron sights simply a matter of quickly canting the weapon with your wrists and locking on to the target. There's no removing a hand from the weapon or making a manual adjustment, and no cluttered field of vision or iron sights blocking the optical sight. Just smooth, quick transitions that could mean the difference between winning or losing a competition, or more importantly - a gunfight. Weight: Rear sight - 3 ounces (85g) / Front sight - 1.5 ounces (44g).