UTG Low Profile Flip-up Rear Sight with Dual Aiming Aperture<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"> UTG new Gen ss flip up rear sight， complete with 3mm Allen wrench to lock mounting deck onto Picatinny rail </span></li><li><span class="a-list-item"> Spring loaded Posi-lock design with side plunger release for positive Flipping/folding </span></li><li><span class="a-list-item"> Simple flip-up-to-aim design with plunger Posi-lock mechanism to MAINTAIN firm position; compress plunger to unlock and fold down for optics Use </span></li><li><span class="a-list-item"> Robust Posi-lock plunger coupled with spring Activated ball bearing and recessed sight base guarantees zero retention </span></li><li><span class="a-list-item"> Capable of Co-witnesses with Reflex/holographic sights and Standard Mil-Spec rear sights， designed to match mnt-755 new Gen ss flip up front sight </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41%2BVrCD379L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hd3NxCqQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51E%2BVVctt3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51pxcZQRkaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51AuiLhKsdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51IWO%2BdXjJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/81cjYbgJmSS.png" noproxy>