Not only does this muzzle brake reduce the muzzle rise to an absolute minimum, it looks very similar to the original pre-ban "bird cage" flashhider.  With standard 1/2" - 28TPI threads it will fit all pre-ban AR style rifles with no gunsmithing.  You can send your post-ban upper in to Wilson Combat and we can permanently install one on your barrel.  This high quality Wilson Combat product is fully CNC machined out of bar stock steel and heat treated for durability.