While shooting class photos at a Nightfighter 101 course put on by TNVC I grabbed all the student and instructor helmets and took shots of them to show off what sort of gear showed up. The night vision unit attached to each helmet is noted on the photos, and the mounts themselves are described below, thanks to Augee from TNVC.
Row 1: GSGM/DPAM (ball detent), G24, G24
Row 2: G24, USGI Aviators' Mount (ball detent) + USGI Ground Adapter Shim, INVG
Row 3: Legacy Rhino, AKA2 Bayonet, Legacy Rhino
Row 4: Chip's helmet, G22
If you click on the photos below, they should enlarge for a closer look:
