The Smith & Wesson M&P10 .308 Win is a usa-made semi-automatic rifle chambered in .308 Winchester, introduced in 2012. Primary use: sport, military, hunting. Type: Rifle Action: Semi-Automatic Caliber: .308 Winchester Capacity: 20 Year introduced: 2012, USA Weight: 80 oz Overall length: 33.5" Status: Active Intended use: sport, military, hunting