Civilian semi-auto HK416 for the European commercial market. HK243 uses the HK416 piston system with semi-automatic trigger group and 16.5-inch barrel. Accepts STANAG magazines; closest civilian equivalent to the HK416. Type: Rifle Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2015, Germany Weight: 160 oz Overall length: 38.5" Status: Active Intended use: sport