which companies still offer A2 uppers?

J&T Distributing has A2 uppers. Also, Midway has an A2 upper from olympic arms.

DPMS has stripped A2 uppers for $65.
Model 1 Sales still offers them, alone, or on any upper or kit.

Read the reviews on the Oly upper
http://www.midwayusa.com/product/663709/olympic-arms-ar-15-a2-upper-receiver-assembly-223-remington-20-barrel?cm_vc=ProductFinding

American Spirit Arms has A2 uppers with M4 feedramps, if that is important to you: ASA A2 upper

JSE surplus also has them:  http://www.jsesurplus.com/a2upperreceiver.aspx

I bought uppers from both of these companies several months ago, and (at the time at least) the JSE Surplus uppers appeared to be exactly like the ASA upper - M4 ramps and all - so I assume that JSE got them from ASA.  So unless something has changed if you want an ASA upper you will save yourself quite a bit of cash getting it from JSE Surplus.

CDNN has stripped DPMS for $50.

SHIT! They have regular A2s and the A2 w/fs (mistakenly called an A1 or C7 by many). I just bought 2 A2 w/fs from DPMS for $75 "sale price".
Thanks for helping empty my bank accout. (I'm sure I'll buy a few, even if I don't need them.

RGuns has quite a selection if you want to deal with those dicks.
I'm actually considering the matt sand set.

Then again, Adco is only an hour from me. Rather see what they can do.