Optimized for assault rifles and machine guns, the AN/PVS-22 1x 3rd Generation Universal Night Sight from N-Vision Optics converts your day riflescope into a night vision device. It features a 3rd generation Pinnacle intensifier tube, manual gain, and resolution of 64 lp/mm. The 3rd generation image intensifier tube utilizes an autogated power supply that provides outstanding performance and enables operation in high-light conditions, slows-down degradation, and helps to extend the life of the device. The catadioptric optical system reduces system's weight and features a permanent boresight alignment. Designed to accommodate daytime riflescopes with magnifications of 1-12x, the lens offers a 68mm focal length and a f/1.15 F-number. The optical system also offers a 13° angular field of view and a 33' minimum focus distance. The aluminum housing is lightweight, durable, waterproof submersible to 66', and resistant to extreme temperatures. It allows mounting this clip-on in front of your riflescope on Picatinny or Weaver rails via its lockable quick release mount and offers compatibility with MIRS and S.T.O.M.P rails.