Airsoft grade only - Hawke Sport Optics Picatinny to Picatinny Tactical Rails

I can tell just looking at this that this is a terrible thing to mount an optic that'll be subject to recoil on this. There's no recoil lugs underneath, and the screw isn't even a shoulder screw, so the only thing keeping this thing from sliding back and forth is friction, which is wholly insufficient. Use this and you will end up with thread impressions on your rails.
At least the rails seem to be in spec.