The AD-T1-NV Mount (Enhanced) is a one-piece mount that places the Aimpoint T1/T2 optic at a 2.33" centerline height. This height is ideal for those LE/MIL and self-reliant individuals who utilize night vision devices or protective masks, allowing them to comfortably use all available modes of NV capable optics. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize and features the Patented QD Auto lock Lever system in either the standard or TAC lever design to accommodate both in spec and out of spec rail systems. The current T1-NV mounts now feature a standard height peep sight machined into the base to allow emergency use of back up iron Mfg: American Defense Manufacturing