Maddog High Performance Air Seal Nozzle M4 / M16<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"> Color May Vary: Blue or Red </span></li><li><span class="a-list-item"> Aluminum Construction </span></li><li><span class="a-list-item"> Complete with an O-ring reducing air leakage and compression issues </span></li><li><span class="a-list-item"> M4/M16 AEG Compatible </span></li><li><span class="a-list-item"> High Performance Air Seal Nozzle M4 / M16 Upgrade </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/21w%2Bi66Hd4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21qdxYk45RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21jiqpo%2BeeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31qCmuMlltL.jpg" noproxy>