Anderson Manufacturing AR-15 Barrel 556/223 16" Carbine Length Gas 1-8 Twist

16 M4 Carbine Length Contour Barrel Chambered 5.56/.223 With A 1-8 Twist - Caliber: 5.56/.223 - Length: 16 - Twist: 1:8 - Profile: Contour - Finish: Parkerized - Material: 4150 - Flutes: None - Gas System: Carbine - Gas Block System: 0.750 - Gas Hole Diameter: 0.068 - Weight: 1.82 lbs. - Dimensions: 16.5 x 1 x 1