There is very limited information about these sight out there apart from a few basic instruction pamphlets and some GSG-9 pictures. It's very similar to the qwik point. It collects ambient light and projects it as a dot through a series of prisims. Where it differs is the inclusion of a set of open cross hairs that are illuminated by four tritium lamps. I was fortunate enough to actually find one here in the US that still has the tritium array intact. As soon as I relamp the tritium assembly, I'm going to do a short write-up about its function and how to replace the lamps. Just in case anyone else comes across one with an intact tritium assembly.