This is a replacement for the Aimpoint COMPC3 turret cap, my model is pre-2014. I don't know if it fits the newer models.
I didn't find any details about the thread and the pitch online, so I had to measure it by myself and draw it.
I used OrcaSlicer, printed on a ELEGOO Neptune 4 Pro.
Printing Details:
Material: PLA+
Layer Height: 0.15mm
X-Y hole compensation: 0.1mm
Infill: 15%
The author marked this model as their own original creation.