M&P 15-22 Optics-Ready Carbine with flat-top upper, removable carry handle, and A2-style stock. The baseline AR-style rimfire that competes directly with the S&W's own standard 15-22. Type: Rifle Action: Semi-Auto Caliber: .22 LR Capacity: 25 Year introduced: 2011, USA Weight: 88 oz Overall length: 36" Status: Active Intended use: Plinking / Range Training, Tactical Training