Someone I knew who owned an Omega reflex sight from Vector Optics had some trouble protecting his lens for airsoft use. I made him this model to use. It'll easily clip onto the optic itself and requires a custom cut 4MM thick PolyCarbonate sheet insert.

The files I've provided include a shape that can be traced for cutting a P-C sheet into shape for use.

I hope these files will be of use to someone. :)

Prusa

i3 MK4

No

Yes

as detailed as you can go

preferred 100% for strenth

Try using a fillament that you know will stand up to airsoft bb impacts. Perhaps a softer and less brittle material is best.

After printing all you need to do is make sure you own a sheet of clear polycarbonate at 4mm thickness. Use the lens shape that's in the provided files as example for the lens you need to cut out of the polycarbonate sheet. After cutting the shape out all you have to do is simply insert it into the slot before snapping the entire lens protection unit onto the optic. First slide the three arms over the top of the sight and then snap the bottom lip over the bottom front. To take it off slightly bend out the three arms and simply lift it off.