Daniel Defense Barrel 10.3" 5.56mm, Carbine, 1:7, Government (stripped) Chrome lined, ext. phosphated

10.3" 5.56mm, Carbine, 1:7, GOVCold Hammer Forging of barrels has been known for decades to produce the most accurate, longest lasting rifle barrels obtainable. The Cold Hammer Forging of barrels is accomplished through intense hydraulic pressure applied at opposing angles by carbide steel hammers. During the hammering process, a mandrel is inserted into the bore while the carbide steel hammers shape the barrel around the mandrel creating the chamber, the lands, and the grooves. In addition to the aforementioned benefits, the Cold Hammer Forging process creates a defect free bore and the most consistent chamber possible.Stripped Barrel 1.15lbs Barrel w/ LPG1.23lbs Barrel w/ FSB 1.46lbs All Daniel Defense cold hammer forged barrels are made from start to finish in our state-of-the-art facility located in Black Creek, GA. In keeping with our heritage of not cutting corners, all cold hammer forged barrels feature a forged chamber and heavy phosphate exterior coating or Salt Bath Nitride Finish. These barrels will prove themselves to be more accurate and last longer than a barrel that has cut or button rifling.Caliber5.56mm NATOBarrel Length10.3"Manuf. ProcessCold Hammer ForgedTwist Rate1:7Muzzle Thread1⁄2×28 TPI (Threads Per Inch)MaterialChrome Moly VanadiumOutside FinishMil-Spec Heavy PhosphateInside FinishChromeGas SystemCarbine LengthDiameter At Gas Port.750″Barrel ExtensionA4ProfileGovernmentWeight1.15 lb