Who says it’s non-QD? Those octagonal crossbolt heads are typical of ADM’s QD system. The levers could be on the other side. If you zoom in you can even faintly make out the laser engraved eagle and American flag on the bottom which are ADM signatures. I don’t know if they sell them to the public in 36mm but I’d bet dollars to donuts that’s a Recon-S or Recon-SL or similar.