Last year, before the mad rush, finances required that I let go my BushMaster Govt (profile) 20″ AR15A4. This was a pre-Cerebus rifle and beautifully finished. It went to a good home to someone who appreciates it. I had always intended on replacing it with a BCM. But then the hysteria hit. I also forgot that one of my first rifles (a while ago) was a Colt Sporter Match HBAR. Regret selling it, but at the time I never used it.
BCMs are still impossible to get but I am happy to see that Colt will be returning to the market! You may have noticed that they have lacked a 20″ rifle, well, except for the neutered CA legal versions.
Here is the listing from Clyde Armory: http://clydearmory.com/colt-ar15a4.html. Google them if you are not familiar. They are legit.
For me this is a must have! In fact, I am going to put $ down tomorrow! :)
Here is a pic of the roll marks from ARFCOM (thread).