16", M4 Profile, 5.56 NATO, Carbine Gas, 4150 QPQ
16", M4 Profile, 5.56 NATO, Carbine Gas, 4150 QPQ, Medium profile for maximum heat resistance during spirited firing. 4150 QPQ coated inside and out for amazing corrosion resistance and durability. Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into our barrels from the start. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges. Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Caliber: 5.56 NATO Barrel Twist: 1:8 Barrel Length: 16" Barrel Profile: M4 Barrel Gas System: Carbine Length Inside Finish: QPQ Nitride Outside Finish: QPQ Nitride Muzzle Thread: 1/2-28 TPI (Threads Per Inch) Gas Block Diameter: .750" Gas Block Journal Length: 1.9" Barrel Extension: M4 Weight: 1.62 lbs Magnetic Particle Inspected! 11-degree Target Crown