Weaver Multi-Slot Base System - 417T for Mossberg 500<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"> Made of the highest quality materials </span></li><li><span class="a-list-item"> Hunting scopes mounts </span></li><li><span class="a-list-item"> Another quality Bushnell product </span></li><li><span class="a-list-item"> Multi Slot Base </span></li><li><span class="a-list-item"> Each Weaver Base is machined to tight tolerances for a custom fit </span></li><li><span class="a-list-item"> Aluminum bases offer maximum strength for rings to hold tight </span></li><li><span class="a-list-item"> Allows for optimal eye relief </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31oTGqyAKEL.jpg" noproxy>