Rmr footprint red dot alternative - SeeAll Open Sights MK3 Pistol Sight Plate System

Neat concept and product if you understand the limitations. I got it chiefly to use in place of BUIS, and with an RMR footprint it’s easy to attach to an offset or piggyback mount. Robust, no batteries needed, holds 0, it’s designed for a pistol slide but I did have enough elevation adjustment to use on a piggyback mount. For everything within 25-50 yards it’ll do the job. Probably wouldn’t rely on it as a sole optic or for distances further than that though. Could see it being a good optic for shotguns too