Well, I have had to ditch this idea due to the fact it is completely impossible to look down the sights of the gun with it on, I would need like 3 riser mounts and the scope to be at the front of the gun to do so.
Would it be safe to use a full face respirator in airsoft (minus the filters because I like breathing). The ones i have looked at use polycarbonate for the face shield. I would also consider testing one myself if needs be.