2.26 inches is not arbitrary. It's the measurement that puts your red dot at the same height as the iron sights, keeps your cheek weld consistent whether or not you're using the optic, and aligns with NVG-mounted devices. This riser holds that measurement to ±0.005" across every unit we ship. If you're pairing a red dot with a magnifier, or running NVGs, this is the foundation that everything else is built on.
