One-piece cantilever mount with integral rings positions the optic almost 2" farther forward to provide extra clearance needed for a night vision device (NVD), add-on magnifier, or long eye relief scope. The "Proper Eye Position Ready" mount also features built-in, two-slot rails on the tops of the rings for convenient mounting of reflex sights or other accessories. Each top ring strap is secured with six TorxA(R) screws to prevent recoil-induced slippage. Side locking bar with two, steel hex nuts and cross-bolts hold tight on any Picatinny receiver rail. Smooth contours and radiused edges give a streamlined appearance, reduce weight, and prevent snagging. Mfg: Burris SPECS: Aluminum, hardcoat anodized, matte black. 5.3" (13.5cm) long, 1.6" (4.1cm) wide, 2.4" (6.1cm) overall height. Height from top of rail to bottom of ring: 1" (2.5cm). 8.7 oz. (247g) weight. Fits scopes with 1" tube. Mounts to MIL-STD 1913 Picatinny rails.