Mine took two weeks and two days to come in. Basically, my FFL (who has had many CMMG guns come to him) says that the volume is a lot higher than what CMMG planned for, but they are still making decent margin so they are continuing to sell them. They probably ran out of ready to sell stock a while back. The reason they are making money is they are ordering parts in bulk to fit out the blemish rifles (still haven't found a blemish on the upper on mine), and probably have only 1-2 people putting the rifles together, testing them, etc, to keep costs down. If there is any kind of delay in parts kits coming in, or a batch of lowers is late, etc, it probably sets them back several days.
Really, for the price, a little patience is probably in order. I got frustrated waiting 16 days for mine, but it did show up!