The HK416 is an AR-15/M16-pattern rifle that replaces the direct-impingement gas system with a short-stroke piston system, dramatically improving reliability in adverse conditions. Developed originally for US Army Delta Force, the HK416 has become one of the most adopted Western military rifles of the 21st century. Norway replaced its entire fleet with the HK416, and it was confirmed as the weapon used to kill Osama bin Laden. Type: Rifle Action: Semi/Full-Auto Caliber: 5.56x45mm Capacity: 30 Year introduced: 2004, Germany Weight: 121.6 oz Overall length: 31.8" Status: Active Military use: Yes Intended use: military, law_enforcement, special_operations