AR 20" 5.56 upper recommendations?

[BHPFan]

I'm surprised FN is not mentioned.

You can find them on the 'net every now and then. Also, Colt is a great choice.

[dr_communist]

How bout rra 20" upper?

I have the a2 and it runs any kind of ammo I throw in it.

[SWMP15]

I saw a brand new Colt M16 20" upper with removable handle a couple of weeks ago at US Firearms in Sunnyvale. The guy said these are very hard to get. I would have bought it, except I just bought an AR in .308.

[Moonshine]

Easy. PSA Hammer Forged 20 inch upper. The only problem is catching them in stock !

On a side note I run a PSA M-4 upper on my rifle that has a Midwest Industries T9 rail and low profile. Not even the hammer forged and it's accurate as heck for what I paid. My next build will be PSA hands down and I may even use their lower to do it this time.

[RMTactical]

BCM would be my first pick.