The HK 416 is a gas-piston AR-platform rifle designed to address the reliability issues of direct-impingement AR-15s in adverse conditions. Adopted by multiple NATO militaries and US special operations units. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2005, Germany Weight: 8.9 oz Overall length: 33.9" Status: Active Military use: Yes Intended use: duty, military, law_enforcement