Description
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. – 18 – Medium Taper Profile – 416 Stainless Steel – Bead Blasted Finish – 1:7 Twist – 5.56’45 NATO Chamber – Threaded 1/2-28 – Rifle length gas port – .75 Gas Journal
