Leupold Mark IMS 30mm/20MOA Rifle/MSR Mount Matte Black - 1 Piece - The Mark IMS family easily eliminates the two most common issues faced when mounting standard riflescopes to AR-style rifles; scope height and eye relief. This model is designed to fit your AR's MIL-spec 1913/Picatinny rail and any scope with a 30mm maintube. Its angled design also adds 20 MOA of elevation. Designed specifically for use with ARs, IMS mounts features a forward cantilever design, placing your scope forward on the rail to provide you will a full field of view. The mount also places the center of the optic 1.5 off the rail, the same height as open sights on a classic AR, making it easier to look through your scope without struggling to get low enough to the stock. Nothing is more crucial than the link between your scope and firearm. Thats why Leupold's mounts are every bit as rugged and dependable as the Leupold optics they secure. And with a huge variety of mounting systems to pick from, you're sure to find the perfect match for your firearm and style of shooting.