FN FS2000 lower serial number with a 17.4" barrel and chambered in 5.56. This gun is OD Green and comes as pictured with (1) FN 30 round magazine, original box and paperwork from factory. This Semi-Automatic Bullpup made in Belgium is like new in box and would make a great addition to any collection. This gun is no longer made and they made even less of the OD green version. This is an early gun sub 6000 serial number.