MaTech Mil-Spec Back-up Iron Sight (B.U.I.S)<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"> Compatible with any Picatinny style rail system </span></li><li><span class="a-list-item"> Designed by Picatinny/MaTech engineers </span></li><li><span class="a-list-item"> One-touch flip up aperture for instant utilization </span></li><li><span class="a-list-item"> Extremely low reflective signature </span></li><li><span class="a-list-item"> Precise range &amp; windage adjustments up to 600 Meters </span></li><li><span class="a-list-item"> Tested to retain zero under extensive firing conditions </span></li><li><span class="a-list-item"> Can be used in conjunction with any standard optic </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31fQk3qtEpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31fkOCaLyOL.jpg" noproxy>