The ATN PatriotG-HPT is a Mil-Spec Night Vision Monocular as well as most advanced Multi-Purpose System. Without tools the ATN PatriotG-HPT can be converted from Pocket Scope to a head/helmet-mountable Night Vision Goggles and is a great alternative to the PVS-7, or adapted to M16/M4 Picatinny style Rail as a Weapon Scope with "Red on Green" Reticle system without need for laser or aiming device, or can be attached to the Film with SLR, Digital or Video Camera, or converted into a Long-Range Binocular. Whether you are Boating, Camping, Home Security or Observing Wildlife, the ATN PatriotG-HPT is one of the best Night Vision Devices made.