Performance Center M&P 10 with tuned trigger, 18-inch stainless barrel, and Magpul PRS stock. S&W's top-tier factory AR-10. Type: Rifle Action: Semi-Automatic Caliber: .308 Winchester / 7.62x51mm NATO Capacity: 15 Year introduced: 2016, USA Weight: 208 oz Overall length: 40" Status: Active Intended use: Precision Shooting, Competition