Night Optics D-2MV Night Vision Head Mount NA-HGC-221 is a commercial-grade head mount designed for a specific series of Night Optics night vision devices. These night vision accessories provide a stable mounting surface for an array of night vision goggles by Night Optics. These head mounts can firmly mount several Night Optics night vision devices, including the D-2MV, D-212, D-221, and D-321. The NightOptics D212 NV Flip-Up Headmount not only securely mounts to your head, it also features a flip-up mechanism so you can disengage your night vision when you don't need it. Night Optics has built these accessories to stay firm even when you're in motion. Extended eye relief makes these Night Optics night vision accessories comfortable to use over long periods, and they come packaged with additional brow pads to keep the head mount working longer. For hands-free operation of your D212, D221, D321, or D-2MV night vision devices, mount them using the Night-Optics D-321 Night Vision Commercial Head Mount.