Rosco K9 16" 5.56 NATO 1:7 Intermediate Gas Stainless Barrel

The Rosco K9 is a 16-inch stainless steel barrel chambered in 5.56x45mm NATO for AR-15 rifles. It uses an intermediate-length gas system with a gas port tuned to cycle reliably whether the rifle is suppressed or unsuppressed. The continuous taper profile is designed to dissipate heat during sustained firing, and the barrel is finished in black nitride for corrosion resistance and wear protection.

The barrel has a 1:7 twist rate, which stabilizes a range of 5.56 NATO bullet weights, and a target crown carried over from the Purebred series. It is threaded with a 1/2x28 pattern for muzzle devices and suppressors. The barrel weighs 34.5 oz and includes an intermediate-length gas tube, so it is a complete installation package for AR-15 builders.

• Caliber: 5.56x45mm NATO
• Barrel Length: 16 inches
• Material: Stainless Steel
• Finish: Black Nitride
• Twist Rate: 1:7
• Thread Pattern: 1/2x28
• Gas System: Intermediate Length
• Weight: 34.5 oz