Aero Precision APRH100116 .308 SS BARREL 16. 5" .308 CMV Barrel Carbine Length Specifications for Aero Precision .308 CMV Barrel 16in: Caliber or Gauge: .308 Winchester/7.62 NATO Length: 16in Twist: 1:10in Bore Type: Rifled Finish: QPQ Corrosion...