Nikula Monocular Polycarbonate Protector & killflash

Made for my cheap aliexpress "nikula" monocular.
I needed a piece that will hold down a polycarbonate sheet, so I could safely use it in Airsoft. I also went ahead and added a killflash. (because why not!)

It's designed to be glued to the front of the monocular. I used a glue commonly used in smartphone repair (B-7000). I would avoid putting superglue (CA) near anything with a lens.

You most likely can also print it without the killflash.
To make the killflash pattern, align the two parts and modify the -killflash.stl one to have zero top/bottom layers, and a honeycomb infill with the desired percentage.