For sale new uppers, that is. Specifically in 1:7 twist and lighter-than-HBAR profile. Pencil/standard is fine, as is gov’t, etc. I’ve looked high and low for an AR-noob friend of mine, and all I can turn up is CMMG, which is on perpetual back-order. Factory Sabre or Colt are beyond budget, unfortunately. I don’t know barrel vendors that well, but I assume somebody must build uppers on a Bushmaster or something. Please help! This guy has a lower built and ready! 
Hmm… did you check with Model 1 Sales?
Looks like Charles Daly is coming out with one shortly.
https://www.m4carbine.net/showthread.php?t=17804
They have a 20" A2 upper out right now, I assume they will sell the A4 upper separately when it comes out.
Thanks…I mentioned Model 1, but there’s a concern it is a step down. I suggested it might be O.K. if he gets a BCM/LMT BCG. I also gave him the heads-up on CD…that may be a big winner. Any others?