S&W M&P15 II Sport Specifications: Model: M&P15 Sport Caliber: 5.56 mm NATO Capacity: 30 Round Barrel Length: 16" Action: Semi-Auto Barrel Twist: 1 in 8" 5R Rifling Overall Length: 35" Extended, 32" Collapsed Stock: 6 Position Telescopic Weight: 6.5 lbs. / 2,948.4 g Barrel Material: 4140 Steel Barrel Finish Melonite Receiver Material: 7075 T6 Aluminum Front Sight: Adjustable A2 Post Rear Sight: Adjustable Dual Aperture Safety: Lever Receiver Finish: Hard Coat Black Anodized Chromed Components: Gas Key, Bolt Carrier Purpose: Competitive Recreational Law Enforcement Home Protection Hunting Additional Features 30 Round PMAG, Forged Integral Trigger Guard, High-Temp Polymer Handguards, Dust Cover