The file 'Novritsch ReflexAR 3D Printer Model' is (stl) file type, size is 25.3KB.
This is a cheaper way to get something similar to the Novritsch reflexAR
You will need the app which is made by Novritsch, and some type of airsoft rifle, the video below will explain how to use the app.
If you don't buy their mount you can only use a demo on the app which is an indoor shooting range, I do not know if there is a time limit on the demo but I will update if there is.
The original idea and the video is here
https://us.novritsch.com/product/reflextar/
This may also not fit your picatinny rail I would check the dimensions. Even for my rail there is some slop. I just make a hole with a soldering iron or push a screw driver and put a screw through it to stop it from moving around. I did include one with a hole and without a hole.
To make sure that your picatinny rail is the same size as mine, print this https://www.thingiverse.com/thing:6586472
Novritsch_reflexAR_without_hole_.stl | 27.4KB | |
Novritsch_reflexAR_with_hole.stl | 55.0KB |