The ISSC MK22 is an Austrian semi-automatic .22 LR styled exactly after the Steyr AUG bullpup design with a 16.75-inch barrel, offering familiar AUG handling with economical rimfire operation. Type: Rifle Action: Semi-Auto Caliber: .22 LR Capacity: 22 Year introduced: 2011, Austria Weight: 6 oz Overall length: 26.5" Status: Active Intended use: Training/Plinking