Incorporates a full-length MIL-STD Picatinny top rail in addition to the standard short rail mounted at a 45° angle opposite the charging handle. Closed rotating bolt, long gas stroke on piston head operating system. Polymer NATO STANAG type magazine. Cold hammer forged, CrMoV, chrome lined barrel. Right hand, 6 grooves, 1:7″ twist rifling. Reinforced polymer bullpup configuration. Folding front sight (blade) with Tritium insert and rear sight (aperture). Overall length: 30 inches (with 2.375 permanently attached muzzle brake).Long Gun Web Model : TavorBarrel Length : 18Caliber : 5.56mm NATOCapacity : 10Finish : Flat Dark EarthItem Description : IWI TAVOR SAR 556 18 FDE 10 MACaliber-Gauge : .223 REM.