CNC Functional GSGM DPAM NVG Mount w/4-Hole Helmet Shroud for ANVIS Night Vision. 100% Brand new and high quality. Constructed of CNC Machined aluminum and mil-spec polymer. The (GSGM) Ground Spec Goggle Mount integrates existing ANVS-6/9, AN/AVS-9, ANVIS GPNVG-18, AN/PVS-23, F4949, M949, AN/PSQ-36, Sentinel Night Vision Goggles (Helmet and night vision goggle not included). 4-Hole Night Vision Shroud for HelmetsRequires 4-hole drilled helmet for correct installation, direct low profile mounting to helmet. A battery compartment stores one (1) CR123 battery(battery not include) to ...