<p>Smith and Wesson M&P10 Model:M&P10 Caliber:.308 WIN/7.62 x 51 Action:Gas Operated Semi-Automatic Capacity:20 Rounds Barrel Length:18†/ 45.7 cm Barrel Twist:1 in 10†5R Rifling Trigger Pull:6.15 LBS. /- (2,789.6 g) Grip:Synthetic Stock:6-Position CAR Overall Length:40.9†(103.9 cm) Extended / 37.6†(95.5 cm) Collapsed Weight:7.71 lbs. / 3,497.3 g Barrel Material:4140 Steel Upper/Lower Material:7075 T6 Aluminum Chrome-Lined Components:Gas Key, Bolt Carrier Fi</p>