Shaw AR-15 5.56 NATO Threaded Barrel 13.9in No Flute Lightweight Profile 1-7 Twist 1/2-28 Thread Matte Stainless. 56 NATO HBar Straight Fluted Barrel is a durable target profile barrel that delivers even greater strength than the target contour barrels offered by most Rifle Scope manufacturers. These Rifle Barrels by Shaw are constructed from rugged 416R stainless steel is rated for mid-cartridge strength and has an H-barrel profile to give you better control of your projectile as it feeds. This Shaw 5.56 NATO 18" HBar Straight Fluted Barrel has a 1:7 twist rate for faster longer-lasting takedowns and an 11-degree target crown to keep you on target at any range. When you need a new barrel for your favorite rifle pick up this Shaw 5.56 NATO 416R Stainless Steel Barrel today. Specifications for Shaw AR-15 5.56 NATO Threaded Barrel: Manufacturer: Shaw Color: Steel Finish: Matte Fabric/Material: Stainless Steel Caliber: 5.56x45mm NATO Gas Block Journal Size-Diameter: .750 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-7 Barrel Material: 416R Stainless Steel Gun Make: AR Platform Gun Model: AR-15 Condition: New Gun Type: Rifle Package Contents: Shaw AR-15 5.56 NATO Threaded Barrel What firearm models does the manufacturer say Shaw AR-15 5.56 NATO Threaded Barrel is compatible with? The manufacturer says that Shaw AR-15 5.56 NATO Threaded Barrel is compatible with AR-15Shaw AR15LWSS13NATO7: AR-15 5.56 NATO Threaded Barrel 13.9in No Flute Lightweight Profile 1-7 Twist 1/2-28 Thread Matte Stainless