Nice Mod and thank u for u'r work
but there is a nasty bug which ensures that the NV-Goggles do not work anymore if you want to look through a weaponsight (no matter which one, even ironsight)
it took a while, but now I know the steps to reproduce the bug:
1. look through a mrt-optic with NVG enabled (i tested with the eotech 552 with 3x magnifier from the sma-mod)
2. don't look through the sight anymore and take the optic off the weapon (this step happens easily in the arsenal)
3. disable the NVG
4. get the optic back on the weapon
from now on u can't look through any optics with NVG enabled