This FN FS2000 is 'New-in-the-Box' Unfired carbine, chambered in  5.56x45mm, the FN FS2000 Tactical is a civilian legal, semi-auto only variant of the proven FN F2000 selective-fire bullpup carvine that offers an intergrated MIL-STD-1913 top mounting rail and emergency backup folding sights. The FN FS2000 carbine is gas-operated and uses a rotating bolt lockup for reliability and greater accuracy. It's 17.44-inch cold hammer-forged MIL-SPEC barrel is gitted with a muzzle brake. Fired cases are ejected through a forward port away from the operator. The thumbhole design poymer stock is ambidextrous.