This sight mount, dubbed the Hostile Engagement Mount, is the result of Swampfox fusing together their tried and true Hostile Engagement Rings into a single substantive piece. The mount is designed to extend the center of the forward ring 2 inches beyond your rail's edge. The configuration provides a low-profile look along with generous eye relief. Like most of Swampfox's Riflescope Mounts & Bases, this sight mount will fit standard and large-frame AR rifles.image The Swampfox Hostile Engagement Mount features a 7075-T6 aluminum construction that's been CNC machined and received a black matte hard coat finish. It has an integral 45-degree RMR footprint and uses T10 star ring cap screws, which require 10 inch-pounds of torque. The Swampfox mount measures in at 30mm in diameter and has an optional centerline height of 1.6 inches. For those who love their sights, this a must AR modification.