The Steiner Optics Mil-Std 1913 Top Rail was created to be the perfect strategy to be sure you have a very stable base on which to mount your favorite optics or accessory to your weapon. A successful tactical base helps keep your optics safe and prepared for action. Binoculars, Riflescopes, Battle Sights, Rings and Mounts are backed by Steiners Heritage™ Warranty. Night Vision Devices, Laser Aiming Solutions, Beacons, and Battle Lights are backed by Steiner's eOptics 2 Year Warranty Steiner Mil-Std 1913 Top Rail 9146