Found on the way back machine. Out of order

Seeing as to how these use the same shape small pattern glass as most small cobras (and some appear to have the medium one but I'm sure it's a different model) , I'd love to get one and stick a holphane glass refractor in it.

The flat glass covers the entire back of the door. You would need to drill holes and install screws and clips for a drop lens

That couldn't be very difficult

If you can get your hands on a Cooper UCD, those come factory with a drop lens. This looks like it might be able to be adapted for use with a OV-25 style glass.

Ok, i'll see. Although it is difficult because it is slow to load