Semi-auto sporting rifle based on the HK21 machine gun design. Delayed roller-blowback with a belt-fed heritage adapted to box magazines. A rare and distinctive H&K collector rifle. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2016, Germany Weight: 11.46 oz Overall length: 40.16" Status: Discontinued Intended use: Collectors, Recreational