Judging by all the ones on Gunbroker that aren't selling and the fact that the one at my local gun shop has been there for several weeks and no takers leads me to believe that the ACR is not proving to be a big seller.
IMO if the ACR MSRP was closer to $1,800 instead of $2,685 then they would be flying off the shelf. I honestly don't understand what makes the ACR a $2000+ rifle when you can buy a top tier AR for a whole lot less than that.
After holding the ACR at my local shop I was not very impressed, I certainly didn't feel the urge to spend $2,495 on it. I think the biggest turnoff was how short the felt when I shouldered it, it felt like I was shouldering an AR with the collapsible stock all the way closed. If I were to buy an ACR I would want the enhanced version with the adjustable stock, but with an MSRP on those of $3,061 I'll pass.