Sons of Liberty Gun Works Liberty Fighting Barrel Features The Sons of Liberty Gun Works Liberty Fighting Barrel is machined from 41V50 chrome moly steel and uses 5R rifling a design that reduces bullet deformation during the firing process compared to traditional land and groove rifling. Its 1 in 7 inch twist rate stabilizes a wide range of 5.56 NATO bullet weights from lightweight to heavier longer range projectiles. The barrel is chrome lined and phosphate treated giving it strong resistance to corrosion and heat while also easing cleaning after extended shooting sessions. A .750 inch gas journal with a deep dimple ensures secure repeatable gas block installation during the build process. Running a mid length gas system the 16 inch barrel cycles the action with appropriate dwell time for reliable extraction and feeding across a variety of 5.56 and .223 Remington loads. The 1/2x28 thread pitch on the muzzle accepts standard AR-15 muzzle devices and suppressors without requiring an adapter. A DLC coated barrel extension further improves wear resistance at a critical interface point between the barrel and bolt carrier group. For AR-15 builders seeking a durable accurate barrel upgrade the Sons of Liberty Gun Works Liberty Fighting Barrel is available for sale at GrabAGun. Sons Of Liberty Gun Works Liberty Fighting Barrel Specifications Manufacturer: Sons Of Liberty Gun Works Model: Liberty Fighting Barrel Caliber: 5.56 Barrel Length: 16 Compatible Hosts: AR-15 Color: Black Finish: Phosphate Thread Pattern: 1/2x28 Barrel Description: Threaded Chrome Lined Medium Contour Available At: GrabAGun