f2000mThe FN F2000 is gas-operated 5.56mm NATO bullpup rifle developed by FN Herstal and first produced in 2001. Its safety and trger mechanisms are derived from the FN P90. The F2000 was desned to be ambidextrous (onlyFN F2000 assault rifle, in standard confuration, with telescope sht FN F2000 assault rifle, in Tactical confuration, with Picatinny rail and back-up open shts FN F2000 assault rifle,