Ballistic Advantage BABL300002F Performance Series 300 AAC Blackout/Whisper (7.62X35mm) 8.3" QPQ Corrosion Resistant This 8.3-inch barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. It features a FailZero Nickel Boron Coated M4 feed ramp extension.
- Caliber or Gauge: 300 AAC Blackout/Whisper (7.62X35mm)