The HK91A2 is the fixed-stock variant of the HK91, equivalent to the G3A3 in configuration. The A2 designation on the civilian HK91 series denotes the standard fixed polymer stock. This is the most commonly encountered HK91 configuration. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm Capacity: 20 Year introduced: 1974, Germany Weight: 160 oz Overall length: 29.5" Status: Discontinued Intended use: civilian, collector