Well my upper came in and I now have a big bore AR. I paired the .50 Beowulf with the colt m4 lower. Put some iron sights on along with a Vortex sparc II. I just need a muzzle brake. I did not like the ones that Alexander had to offer so I will have to look around.I bought one previously when they were 249.....couldn’t resist at this price either. An Alexander 50 Beowulf Upper is going on one and possibly a socom .458 upper on the other.