The HK MR223A3 is the European civilian designation for what is essentially the HK416 A5 in semi-auto, featuring the updated A5 improvements including a new stock, improved rail, and updated controls. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2015, Germany Weight: 7.9 oz Overall length: 37" Status: Active Military use: Yes Intended use: Tactical, Precision, Collector