The FN SCAR 17S is the semi-automatic civilian version of the FN SCAR-H (Heavy), the Mk 17 currently used by US SOCOM. The SCAR 17 uses the same short-stroke gas piston action as the 16S scaled for 7.62x51mm with a side-folding adjustable stock. It delivers full-power .308 ballistics from a 16.25-inch barrel in a 38-inch package with outstanding ergonomics. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 2010, Belgium Weight: 104.8 oz Overall length: 38" Status: Active Military use: Yes Intended use: military, tactical, precision, sporting