Rosco Bloodline 8.2-inch .300 Blackout Nitride Barrel 1:7

The Rosco Manufacturing Bloodline 8.2-inch barrel for .300 AAC Blackout is built for short-barrel rifle (SBR) and pistol configurations where compact size and suppressor compatibility are priorities. Constructed from 4150 CMV steel and finished with a nitride treatment, this heavy-profile barrel pairs durability with corrosion resistance. Designed with input from SOCOM end users and contributors to the caliber’s development, the Bloodline seeks to balance subsonic and supersonic performance depending on ammunition and barrel length. All NFA rules apply.

Key Specifications

• The manufacturer is Rosco Manufacturing.
• The model is Bloodline (BL-82-HB-300BLK-7-P).
• The caliber is .300 AAC Blackout.
• The barrel length is 8.2 inches.
• The twist rate is 1:7.
• The barrel material is 4150 CMV steel.
• The finish is Nitride.
• The profile is a Heavy Profile barrel.
• Intended use includes SBR and pistol use with suppressor compatibility.

With a robust heavy profile, proven 1:7 twist, and a durable nitride finish on 4150 CMV steel, the Bloodline 8.2-inch barrel is a practical choice for compact .300 Blackout builds that require consistent, suppressor-friendly performance without sacrificing durability.