Monolithic Upper. Any thoughts?

[Don29palms]

The gun I'm building now is being sold to my brother. He's got a good collection of guns but no ARs yet. When I told him about what I was working on he said he was looking for the same setup so he's buying mine. So I was thinking of another one. Something like this

Mega Arms 3GTR-3H billet lower
Rock River Arms LPK w/ Hogue grip
Mega Tactical Trigger
Magpul PRS Stock w/ A2 buffer tube, buffer and buffer spring
KNS Anti-rotation pins
Yankee Hill Machine Extended Take Down pins
Magpul Pmag 10rd
Mega Arms MTS Monolithic Upper
Mega Arms Mega Grip charging handle
Bravo Company bolt,firing pin, firing pin retainer and cam lock
Mega Arms MTS Rifle length gas piston system
Black Hole Weaponry 24" rifle length gas system Match grade poly 3 rifling black finish
Black Hole Weaponry Dragon Head Muzzle Brake
Nikon M-223 3-12x42 Riflescope w/ Nikon M-223 Riflescope Mounting Rings
Tango Down Combat Bipod

Any thoughts? Did I miss anything?

[SEP]

It looks great! Although I may be biased. I'm accumulating parts for a very similar build. I went with a Wilson Combat LPK, an AR Gold trigger, a LaRue BCG and I'm leaning toward a Shilen barrel.