Upgrade your AR-9 platform with the Guntec USA 5.5" 9mm AR-9 Barrel. This compact barrel is perfect for building a maneuverable pistol or short-barreled rifle. Crafted from high-quality 4150 steel with a durable black nitride finish, it offers excellent corrosion resistance and longevity. The 1:10 twist rate provides optimal stabilization for common 9mm bullet weights, ensuring consistent accuracy. The barrel's compact size makes it ideal for close-quarters situations and concealed carry applications. Designed for compatibility with standard AR-9 components, this barrel offers a reliable and accurate solution for your 9mm AR build.

Features and Specifications:

• Caliber: 9mm

• Barrel Length: 5.5"

• Material: 4150 Steel

• Finish: Black Nitride

• Twist Rate: 1:10"

• Profile: Government

• Threading: 1/2x36 (estimated)

• Feed Ramps: Standard AR-9

• Weight: 0.5 lbs (estimated)

• Dimensions: 1.40" x 2.30" x 6.30"

• Made in the USA