Abstract: A system and mount for releasably coupling an infrared aiming light beneath he barrel of a shotgun, including a gun barrel and an extended tubular magazine. The mount includes four clampable opposing mount surfaces, where two of the surfaces approximates a curvature of the firearm barrel and two that approximates a curvature of the extended tubular magazine. A rail mating surface and draw screw releasably couples a rail, integral with an infrared aiming light, to and below the mount surfaces. The system includes optional activation of the aiming light using a tape switch located on the hand grip of the shotgun.

Abstract: A multispectral sight integrated onto a man portable rifle or stand alone apon device for sighting the rifle or for surveillance by the device. The multispectral sight is contained in a unitary housing attached to or manufactured as an integral part of the man-pack weapon, such as from the forestock to the shoulder stock of a rifle, the sight is comprised of common objective optics and eyepiece optics. Between the objective optics and eyepiece optics and optical devices for collecting and separating input radiant energy into a plurality of distinct wavelength spectrum channels, electronic processing means for processing a visible spectrum and for processing and converting to the visible spectrum a near infrared spectrum and a far infrared spectrum in each of three spectrum channels, and optical devices for routing the outputs from the separate channels into the common eyepiece optics for viewing of a scene at all light levels.