The Mk 17 SCAR-H (Special Operations Forces Combat Assault Rifle - Heavy) fires 7.62x51mm NATO and is issued to SOCOM units. Features a fully adjustable folding stock, Picatinny rails, and a 16-inch chrome-lined barrel. The heavy-caliber companion to the Mk 16 SCAR-L. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 7.62x51mm Capacity: 20 Year introduced: 2009, Belgium/USA Weight: 8 oz Overall length: 38.3" Status: Active Military use: Yes Intended use: Military, Special Operations