Blackout Defense OneX Aimpoint Micro Riser Mount 2.3in Black. 93 or 2.30 optical centerline height for rapid and upright sight alignment that is especially useful with tactical equipment such as night vision goggles gas masks and headsets. The 2.3 riser also features a large EDM-cut window that provides an unobstructed view of both your front and rear backup iron sights in case of optics failure due to battery depletion debris or physical damage. Machined from 7075 aluminum and hard coat anodized selected cerakote finishes are applied over the anodize layer for added corrosion resistance. Specifications for Blackout Defense OneX Aimpoint Micro Riser Mount: Manufacturer: Blackout Defense Fabric/Material: 7075 Aluminum Weight: 0.3 lb Features of Blackout Defense OneX Aimpoint Micro Riser Mount Opening allows for full use of iron sights without removing optic Compatible with all micro footprint devices EDM-cut window for clear view of backup irons Direct mount design Package Contents: Blackout Defense OneX Aimpoint Micro Riser Mount Blackout Defense RISER-ONEX-AIMPOINT-2.3-BLK: OneX Aimpoint Micro Riser Mount 2.3in Black