Vortex Optics StrikeFire 2 Red/Green Dot Sight with Cantilever Mount (SF-RG-501) and FREE Vortex Lens Pen<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"> Unlimited eye relief， 6-hour auto-shutdown feature maximizes battery life. CR2 Battery Included. 30mm one-piece tube. </span></li><li><span class="a-list-item"> Co-witness mounting Red/Green Dot Sight 4 MOA Dot. Red/Green Light Switch. Night Vision Mode. </span></li><li><span class="a-list-item"> Simple， fast and effective. Parallax free design allows for rapid shooting with both eyes open - no parallax shooting error. </span></li><li><span class="a-list-item"> Comes with Free Vortex Lens Pen， cleans fingerprints or smudges fast and easy. </span></li><li><span class="a-list-item"> Waterproof optics are O-ring sealed to prevent moisture， dust &amp; debris from getting inside. Nitrogen purged to inhibit internal fogging. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Ju2SWhCOL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/413sMsZX%2BnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BWbd0DXcL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BtY3rIm5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31aZvcPfDWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Eo2qdsXnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41XkM45TxUL.jpg" noproxy>