S&W Model M&P 15 Whisper .300 Whisper/.300AAC Blackout 16 Inch Threaded Barrel No Sights 6-Position Collapsible Stock Matte Black Finish 30 Round

Built on the M&P15 platform with 5R rifling. Gas operated. Upper and lower of 7075 T6 aluminum. 4140 steel barrel with MCR maximum corrosion resistant finish. Low recoil and muzzle blast. Barrel threaded to 5/8-24. 1:7.5 inch barrel twist rate. Chromed firing pin. Six-position collapsible stock. Synthetic grip. Thirty round magazine capacity.