The 6.anything, is superior as a round, but if it is in the AR/M4 platform, the stoppages will continue in the sand box, it just was not built around the environment of that place. The Scar looks good, but convincing the U.S. yeah sayers is minimal at best in this
political environment. I do wonder how well, a well built, AK variant would work, made by U.S. I love the M14, and am old enough, I hate to carry it and the minimal ammo to go fighting with it. But our recent forefathers, did carry it and it works + the ammo. Maybe they should consult Krebs on the AK, and maybe it will be accurate, and the sights will be adjustable to make hits, beyond 200 meters on the fly including windage, and have a good optical sight base, that is tight.