HK416 with 14.5-inch barrel — standard U.S. SOCOM configuration replacing the M4 carbine. Piston-operated for improved reliability over direct-impingement, with cold hammer-forged barrel. Type: Carbine Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2005, Germany Weight: 126.4 oz Overall length: 33.7" Status: Active Military use: Yes Intended use: military, law_enforcement