The 16.5-inch HK416 A5 is the standard civilian-legal configuration that offers the piston-driven reliability of the military HK416 in a barrel length compliant with most legal jurisdictions. The longer barrel adds approximately 80 fps of muzzle velocity over the 14.5-inch and is the most common configuration in US civilian hands. The A5 ambidextrous lower and improved trigger group are standard. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2014, Germany Weight: 83.5 oz Overall length: 35.2" Status: Active Intended use: law_enforcement, patrol, sporting