ATN PS31-3HFW Gen 3 Dual Tube Night Vision Goggle/Binocular with 40 FOVThe PS 31 Binocular Night Vision Device (BNVD) is a compact, lightweight, dual tube goggle to replace the legacy PS 15. In a sea of dual tube night vision goggles, the PS 31 is one of the smallest and lightest units by far. The PS31s can be outfitted with various levels of high performance US made Gen 3 image intensifier tubes. Working directly with U. S. Operators input, the PS 31 was designed to increase system resolution, significantly reduce head