Ballistic Advantage 6mm ARC 18in SPR Barrel, 1:7 Twist

This Ballistic Advantage Premium Series barrel is an 18-inch SPR contour barrel chambered for 6mm ARC and intended for AR-15 platforms. It is machined from 416 stainless steel and finished with a QPQ treatment for enhanced wear and corrosion resistance. The barrel uses a 1:7 rate of twist and features a rifle-length gas system with factory threading and an extended feed ramp for reliable feeding.

Key Specifications

• The barrel is chambered for 6mm ARC.
• The barrel length measures 18 inches.
• The twist rate is 1:7 to support stabilization of a range of bullet weights.
• The barrel is machined from 416 stainless steel.
• The applied finish is QPQ for improved surface durability.
• The contour is an SPR profile for a balance of rigidity and weight.
• The gas system length is Rifle.
• The muzzle is threaded 3/8-24 for common muzzle devices.
• The barrel weight is 2.58 lbs.
• The feed ramp is an Nickel Boron Coated Extended M4 Feed Ramp Extension.

The Premium Series SPR contour delivers consistent harmonics and straightforward integration into AR-15 builds for precision-focused shooters. Durable QPQ protection, a Nickel Boron feed ramp, and factory threading provide a practical, long-lasting foundation for accuracy-oriented and match-capable rifle setups.