This BSF Barrels replacement barrel is chambered in 6mm ARC with a 18-inch length and a 1:7.5 twist rate, made for semi-auto AR-15 rifles. 6mm ARC brings long-range ballistics to the standard AR-15 receiver size. It is a straightforward way to build a new upper or rebarrel an existing AR-15 in this chambering.
- Brand: BSF Barrels
- Platform: AR-15 (semi-auto)
- Chambering: 6mm ARC
- Barrel length: 18"
- Twist rate: 1:7.5
- Listed weight: 2.38 lb
- Part number: SF3IYT0050
