Ade Advanced Optics Front/Rear 45-Degree Rapid Transition BUIS Backup Iron Sight<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Same height above bore as standard-issue M4 / M16A4 sights </span></li><li><span class="a-list-item"> Machined from lightweight， extremely durable 7075 aluminum， Mil-Spec hard anodized </span></li><li><span class="a-list-item"> 1/2 MOA elevation and windage adjustments </span></li><li><span class="a-list-item"> Ambidextrous sights easily and securely mount to Picatinny rails using a flathead screwdriver </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31W6Oq47wwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41gnrxhd1AL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hCgdEJn%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/315bM5vPOeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41RtteWAZLL.jpg" noproxy>