The BSF SF3IYT0051 AR-15 Semi-Auto 6ARC 20" 1-7.5 is a precision-engineered AR-15 replacement barrel designed for shooters who demand consistent accuracy from their 6mm ARC platform. Its 20-inch barrel length paired with a 1:7.5 twist rate is optimized for modern high-BC projectiles, while the semi-auto configuration integrates seamlessly with standard AR-15 uppers.

This model is ideal for extended-range target shooting, training, and hunting where the 6mm ARC cartridge’s flat trajectory and efficiency shine. The carefully tuned twist rate supports excellent stability with a wide range of bullet weights, helping maintain tight groups downrange. Built by Bsf Barrels, this barrel reflects the manufacturer’s focus on precision machining and dependable performance.

Key Features:

• Manufacturer: Bsf Barrels
• Model: SF3IYT0051
• Caliber: 6mm ARC
• Action: Semi Auto
• Barrel Length: 20"
• Twist: 1:7.5"