The BSF Barrels SF3IYT2278 AR-15 Semi-Auto 338 ARC 12" 1:8 Threaded Barrel brings BSF’s carbon fiber wrapped technology to a compact, hard-hitting AR-15 build. This 12-inch barrel pairs a match-grade 416R stainless steel core with a roll-wrapped carbon fiber sleeve that is drilled for ventilation, helping manage heat while maintaining rigidity. The threaded muzzle makes it easy to add your preferred suppressor, brake, or flash hider, and the 1:8 twist rate is tuned for a wide range of 338 ARC bullet weights.

This barrel is ideal for shooters building a short, lightweight AR-15 in 338 ARC for range work, hunting inside moderate distances, or suppressed use where compact handling matters. Its semi-auto design and AR-15 compatibility make it a straightforward upgrade or replacement for existing builds. BSF’s attention to precision and materials results in a barrel that balances accuracy, durability, and reduced weight.

Key Features:

• Manufacturer: BSF Barrels
• Model: SF3IYT2278
• Caliber: 338 ARC
• Action: Semi-Auto
• Barrel Length: 12"
• Twist Rate: 1:8"
• Construction: 416R Stainless Steel / Carbon Fiber Wrapped
• Firearm Fit: AR-15
• Muzzle: Threaded
• Weight: 1.61 lb