Chambered in 5.56x45mm NATO, the FN FS2000 Series are semi-auto only variants of the proven F2000 selective-fire bullpup carbines. The FS2000 carbines are gas-operated and use a rotating bolt lockup for reliability and greater accuracy. They feature 18.5" cold hammer-forged MIL-SPEC barrels and muzzle brakes. Fired cases are ejected through a forward port away from the operator. The olive drab thumbhole design polymer stock is ambidextrous. The tactical variant of the FS2000 features an extended top receiver MIL-STD-1913 rail with flip-up adjustable iron sights that allow for picatinny rail accessories to be fitted. This rifle includes a 30-round magazine, a cleaning rod, and the original factory box with owner's manual. Its synthetic stock, its metal, and its bore are all in excellent condition.