Re: Night vision or night vision scope
I use a PVS-14 behind an Eotech with NV capability. A new PVS-14 is over your budget but maybe you could find a used one. Of course, that could be problematic because you don't know how many hours the previous owner put on the NV rig. Newer model PVS-14s have some improved features over the earlier models so maybe you could find an older version still NIB at a reduced price. I haven't tried many NV rigs but the PVS-14 beats the heck out of the others I've played with.
I'd do what Chull suggested - give TNVC a call.
Just FYI - If you did go the route of a PVS-14 behind a dot device, the problem then becomes how to mount them both. LaRue sells a mount that will hold both and yet still fit on a standard upper rail without the need to remove the rear BUIS. But of course, it costs an arm and a leg.