Well, that depends on how many HK actually made and what their current production rate is. Going to gun shows recently, I have no problem finding almost any other gun, including other EBRs, high end or not. There are probably only 2 reasons they are hard to find now. Either they are high production and there is a massive run on the MR specifically, or they were produced in relatively low numbers and production may currently be stopped, and they have simply sold out of the current small inventory. I'm guessing #2 is more likely than #1. Maybe they made just enough for the die-hards. If that was exactly their intention, then it might be considered a success. The interesting thing will be to see what happens long term.
My feeling is that the US MR556A1 fits in the high-end AR category like LWRC, KAC, etc. These guns are expensive, high quality, and more than the average shooter probably needs or wants. They are never going to be sold in the numbers that S&W, Bushmaster, DPMS, RRA, or Colt are, and their production numbers probably reflect that. I still think a lot of people who bought the MR are HK fans, but how does the gun do in picking up non-HK fans? It would be interesting to see HKs munbers vs. other high end ARs, but I'm sure we never will.
