M&P 15-22 with pinned/fixed stock for compliance in states with magazine capacity or assault weapons restrictions. Identical mechanically to the standard 15-22 but with a fixed stock and typically a 10-round magazine. Type: Rifle Action: Semi-Auto Caliber: .22 LR Capacity: 10 Year introduced: 2014, USA Weight: 87 oz Overall length: 36" Status: Active Intended use: Plinking / Range Training