I gotcha. Looks like basically a cam-lock (more or less). I hope you can quickly/easily remove double bridge bino's from the mount.If you look at the RRS marked black buckle there is a pin that holds the nylon strap. That lever lifts up and releases the tension on the strap that is wrapped around the single objective lens. That is mounted in the QD mount.
Imagine putting your thumb under the part marked RRS and lifting up...