Big Dot Tritium Sight G17/19/22/23/24/26/27/31-36 G20/21/29/30/37<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"> Larger front sight improves the speed of front sight acquisition </span></li><li><span class="a-list-item"> White dot reflects light for best visibility in low light </span></li><li><span class="a-list-item"> Express rear prevents obstruction of front sight when moving </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31GBx9WnNRL.jpg" noproxy>