Description
Perfect for building your custom MK3 upper group. Comes with properly installed barrel extension. All barrel sub-assemblies are properly headspaced. – 24 – Heavy Taper Profile – Bead Blasted 416 Stainless Steel – 1:8 Twist – 6.5 Creedmoor AR Match Chamber – Threaded 5/8-24 – Rifle Length Gas Port – .936 Gas Journal









