Ballistic Advantage BABL300011M Modern Series 300 AAC Blackout/Whisper (7.62X35mm) 16" QPQ Corrosion Resistant This Ballistic Advantage Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension.
- Caliber or Gauge: 300 AAC Blackout/Whisper (7.62X35mm)