CMMG 30D810A Barrel Sub-Assembly 300 Blackout 8″ Black Nitride Finish 4140 Chromoly Steel Material Pistol Length with Medium Taper Profile for AR-15

Caliber or Gauge: 300 AAC Blackout/Whisper (7.62x35mm) Length: 8″ Model: Barrel Sub-Assembly Twist: 1:7″ Sights: None Bore Type: N/A Finish: Nitride Type: Rifle Chokes Included: N/A Barrel Type: Pistol Length Ammo Type: N/A Barrel Features: Medium Taper Profile