Arriving on the market in 2006, the FS2000 is the semi-automatic civilian version of FN's F2000 bullpup assault rifle and carries many features that represent the state of the art in .223/5.56mm rifles, including extensive polymer construction, integral top Picatinny rail, STANAG magazine compatibility and a front ejecting bullpup system. With a rail mounted post front and flip up rear peep sights. With original matching box.