Anderson Manufacturing 16 inches M4 Carbine Length Contour Barrel Chambered 5.56/.223 With A 1-8 Twist B2-K004-AN08-0P. 56/.223 Parkerized/RF85 Finish. M4 Feed Ramps Carbine Gas System Specifications for Anderson Manufacturing M4 Contour Barrels...
Anderson Manufacturing 16 inches M4 Carbine Length Contour Barrel Chambered 5.56/.223 With A 1-8 Twist B2-K004-AN08-0P. 56/.223 Parkerized/RF85 Finish. M4 Feed Ramps Carbine Gas System Specifications for Anderson Manufacturing M4 Contour Barrels...