The 2nd Gen. image intensifiers that Russians make are distortion free, since they do not have fiberoptics twister. This is comparable to the latest American models in every way except price. Compare it to the latest third-generation American model and see if you can justify spending $5000.00 more.

This is an excellent scope from the PNS series with 4x magnification and non-inverting image intensifiers that use micro channel plates and clear glass for the optics and are totally free of distortion.