The Bsf Barrels BSF SF3IYT0050 AR-15 Semi-Auto 6mm ARC 18" 1-7.5 barrel is built for shooters who want a lightweight, accurate upgrade for their AR platform. Its 18-inch barrel length paired with a 1:7.5 twist rate is optimized for modern 6mm ARC loads, while the semi-auto configuration is designed to integrate smoothly with standard AR-15 systems.

This model is well suited for precision range work, training, and hunting where the efficient 6mm ARC cartridge can shine at distance. The balanced length and profile help maintain maneuverability without sacrificing velocity or stability. Backed by Bsf Barrels’ focus on precision manufacturing and consistency, this barrel offers a refined foundation for a capable AR-15 build.

Key Features:

• Manufacturer: Bsf Barrels
• Model: BSF SF3IYT0050 AR-15 Semi-Auto 6ARC 18" 1-7.5
• Caliber: 6mm ARC
• Action: Semi Auto
• Barrel Length: 18 inches
• Twist: 1:7.5