The AD-DELTA-C-H mount is made for putting high power glass onto a flattop style AR-15. The AD-DELTA-C-H is a cantilever scope mount with 2" of eye relief built in and high 1.93" height ideal for use with NV or gas masks. Ring spacing is 4.4". It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. This mount features horizontal split rings and the Patented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems.Features :Does not require proprietary tools for adjustmentCan be adjusted with your finger or a flat blade screwdriverLever can be configured to lock to the front or the rearPrecision machined from 6061 T6 AluminumHard coat anodized for a lifetime of performance"30mm Rings, 1.70" Height,