US civilian semi-auto version of the HK416. Short-stroke piston AR-platform derivative developed to eliminate AR-15 direct impingement reliability issues. Used by US special operations forces. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2005, Germany Weight: 7.93 oz Overall length: 35.43" Status: Active Military use: Yes Intended use: Tactical, Law Enforcement, Military Service