The AD-170-VPG provides a QD solution for a picatinny rail, offering a .60" rise above the mounting surface. Overall length is 2.3". It accepts all VPG bolt on rails that come in both 3 lug and 5 lug variations. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features 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 performanceFully adjustable to fit both in spec and out of spec rail systems"0.60" Height,