Features Include: 5.56mm NATO, M&P 15X with M-LOK, Gas Operated Semi-Auto, Capacity: 30+1 Rounds, Barrel Length: 16", Overall Length: 36.75" Extended, 33.5" Collapsed, Weight: 6.4 lbs, Adjustable A2 Post Front Sight, Folding Magpul MBUS Rear Sight, Polymer Grip, 4140 Steel Barrel, 7075 Aluminum Upper & Lower Receiver, Finish: Hardcoat Black Anodized, New, M&P Slim, Aluminum Carbine-Length Handguard with Magpul M-LOK, 2" M-LOK Aluminum Picatinny-Style Rail Panel Included, Picatinny-Style Top Rail, Forged, Integral Trigger Guard, Patented S&W Flash Suppressor, Armornite Finish on Barrel - Interior and Exterior, Chromed Firing Pin, 30 Round PMAG and 1/8" Twist, 5R Rifling.