Kaw Valley Precision Barrel Features The Kaw Valley Precision Barrel is machined from 4150 CMV steel the same alloy widely used in mil-spec rifle barrels and button rifled with a 1:10 twist to stabilize a wide range of 9mm bullet weights. Its AR15-pattern barrel extension is designed to work with any Milspec AR15 upper receiver and the barrel is specifically built to function in both Colt and Glock style AR-9 builds. An integrated feed ramp smooths the transition from magazine to chamber reducing feeding malfunctions that pistol-caliber carbines can be prone to. The 11-degree target crown protects the rifling at the muzzle while supporting more consistent accuracy from shot to shot. Both the bore and the exterior of the barrel receive a black QPQ salt bath nitride finish a treatment that resists corrosion and wear far better than standard phosphate coatings while also easing cleanup after a long range session. The light .675 barrel profile trims weight from the front of the build which matters on a 16.25 pistol-caliber carbine where fast handling counts. At 23.1 oz the barrel is light enough to keep the completed upper balanced and maneuverable. Threaded at 1/2x36 TPI for 9mm-specific muzzle devices the Kaw Valley Precision Barrel gives AR-9 builders a durable accurate drop-in option for their next project. Kaw Valley Precision Barrel Specifications Manufacturer: Kaw Valley Precision Model: Barrel Caliber: 9mm Barrel Length: 16.25 Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Profile: Light .675 Thinnest Cross-Section Twist Rate: 1:10 Finish: Black QPQ Salt Bath Nitride Barrel Extension: AR15 Milspec Muzzle Thread: 1/2x36 TPI Crown: 11-Degree Target Crown Compatible Hosts: Colt and Glock Style AR-9 Weight: 23.1 oz Available At: GrabAGun