I have had this Acog for about a year now and it has been just sitting in my safe since I took it off my AR. It is in great shape and the tritium seems to be glowing well still. The reticle is the red triangle lit by tritium and fiber optics with 1.5 magnification. The clarity and field of view for this compact scope are amazing for its size. I do not have the original case or paperwork but I have called Trijicon and they do believe by the markings that this scope is authentic. Let me know what you have for a vortex viper and maybe we can work out a trade for some cash and my Acog for your scope. Thanks.