Action: Semi Auto - Caliber: .308 WIN/7.62 x 51 - Capacity: 20 - Finish: Black - Material: 4140 Steel / 7075 T6 Aluminum - Stock: 6 Position CAR - Twist: 1:10 - Barrel Length: 18 - Overall Length: 37.6 - 40.9 - Weight: 6.15 lb - Multiple uses. Zero compromises. Introducing the world's first .308 that comes in M&P. Easy to accessorize hard to put down the powerful new M&P10 makes short work of long range. Advanced by design ahead by a mile. Close in on far away with the new M&P10. - Ambidextrous magazine catch bolt catch - Reversible ambidextrous safety selector - Patented S&W enhanced flash hider - Gas block with integral Picatinny-Style Rail - QD Sling swivel attachment point (bottom of gas block) - 5R rifling - Maximum corrosion resistant barrel finish - 9310 steel bolt - Chromed firing pin