AR-pistol configuration of the M&P15-22 with an 8.5-inch barrel and no stock. Uses the same M&P15-22 receiver but fitted with a pistol brace, classified as a pistol under ATF rules. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 25 Year introduced: 2011, USA Weight: 5 oz Overall length: 26" Status: Active Intended use: Plinking,Training,Compact Range