M&P®15 SPORT II 10202 5.56 mm NATO Gas Operated Semi Auto 30+1 Rounds 16” (40.64 cm) Adj. A2 Post Folding Magpul® MBUS® Overall Length: 35.0” (88.90 cm) Extended / 32.0” (81.28 cm) Collapsed Grip: Polymer Weight:6.45lb 4140 Steel 7075 T6 Aluminum