Since the difference between units can be pretty big (both FOM and the existence of black spots), we have decided to make public units specification and picture of the tube (to see black spots). Price depends on the quality of the tube. Please be aware that not all spots are visible on those pictures and in real life the spots appear to be bigger than on this picture. Spots score is our own metric to compare visibility of spots between tubes.
The PVS-14 is a manual gain version. The rugged design is combat proven and extremely durable. Its built for combat.