The ISSC MK22 is an Austrian-made .22 LR semi-automatic carbine styled to resemble an AR-15. Built for training and recreational use, the MK22 provides the manual of arms of the AR-15 in a low-cost .22 LR platform with a 16-inch barrel. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: .22 LR Capacity: 22 Year introduced: 2010, Austria Weight: 6.2 oz Overall length: 35" Status: Active Intended use: Training, Plinking