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The AN/PVS-22 or Universal Night Sight is a Picatinny rail mounted in-line night sight designed and manufactured by FLIR Systems and issued with the existing telescopic sight or red dot sight. It can be added to any weapon that uses a Picatinny rail and has an existing scope, simply mounting in front of the existing scope to grant it night vision capability. It utilizes a third generation image intensifier tube, which is not available outside of the USA.