Do you want the best NVD weapon sight on the market? If so then our new Aries 8900 is for you. It doesn't get any better then the Aries 7900 Crusader when it comes to performance. For the MK 8900 we use a top of the line "Prime Select" US 4th Gen. light intensifier tube for added light gain and resolution. Combine this select tube with 5x magnification and a super fast F:1.4 lens the image that you will get out of your Crusader is unbelievable. The best optics, tubes and a 2 year warranty makes the Aries 8900 crusader one of the best night vision weapon sights there is!