It’s interesting that then smart foregrips are only seen with units also issued with the new NODs. That reinforces my belief that it is an inbuilt IR laser to be paired with the NODs for night time aiming.High-altitude exercise. Fore grips, optics, new combat uniforms, etc. Note the fore grip is the new smart kind, with push to talk and other functions.
Especially since most soldiers are wearing their NODs on the right (shooting) eye. So while we did have pictures of dedicated night scopes being issued and used, I think that was for specific limited roles and deployments, whereas an IR laser is far cheaper and more practical for line troopers than to issue everyone with a separate night scope as well, that they have to exchange with their daytime optic for night fighting and vice versa.