This FNH SCAR 17S is a semi-auto rifle which fires the .308 round. It has a matte black finish with a free-floating, 16.25" hammer-forged, MIL-SPEC barrel with flash hider. This rifle is a gas operated, short stroke piston design. It has an integrated quad rail system, a folding, adjustable rear sight, a folding, hooded front sight, an adjustable cheek-rest, and an adjustable, folding stock. This rifle comes with one 20-round magazine.