First of all if you can get a hold of a gun store or firearm manufacture on the phone over the next week or two you will be lucky. EVERYONE, I have been in contact with lately is SWAMPED beyond belief.
Additionally, by the end of this weekend do not expect to see any AR-15's in stock. I was at a gun store earlier today and they were flying off the shelf two at a time. And these were no smoking deals either, people were paying about 25%-35% over traditional mark up just to have them in hand before the weekend.
I bought some stuff admittedly the deals were not great, but I would say I paid fair market value. I got a Surefire can for $1300.00 and some other stuff.
Lastly, if you are in the market for a Surefire can and you find someone who has them instock you may not want to hesitate on making the purchase. Everyone in the Phoenix area is either out, on back order, or only carrying very obscure model Surefire cans. And you cannot start the class III paperwork until you have a can in hand.