AR-15-pistol-configuration M&P15 with an 11.5-inch barrel and SB Tactical pistol brace. Provides near-carbine capability in an NFA-exempt package. Includes the forward assist and dust cover found on the Sport II but not the original Sport. Type: Semi-Auto Pistol Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2016, USA Weight: 5.9 oz Overall length: 27" Status: Active Intended use: Home Defense, Range