Experience the reliability, accuracy and versatility of the FN SCAR™ 16S and 17S, the civilian legal, semi-auto only versions of the U.S. Special Operations Command’s newest service rifles. The SCAR 16S is chambered in 5.56x45mm NATO (223 Rem.) while the SCAR 17S fires the 7.62x51mm NATO (308 Win.) cartridge. The innovative gas-operated, short stroke piston system reduces fouling for greater reliability. Both the SCAR 16S and 17S feature user-interchangeable, free floating, cold hammer-forged MIL-SPEC barrels with hard-chromed bores. Models with 10- or 30-round detachable box magazines (DBM) are available. Fully-ambidextrous operating controls instantly adapt the SCAR S-Series to any user. The receiver integrated MIL-STD 1913 optical rail plus three accessory rails enable mounting of a wide variety of tactical lights and lasers. The side-folding polymer stock is fully adjustable for comb height and length of pull.