Leupold 176885 Integral Mounting System Mark IMS Black Aluminum 34mm Tube Picatinny Rail Mount Bolt Action 20 MOA
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 34mm maintube.