It is a Condor II from Maxpedition. You can finder cheaper packs that are nearly as rougged, but I have yet to find a company that makes them as tough for that kind of price. I highly recommend them. I have four bags from Maxped. and they all rock.
I have two, the Vulture II pictured, and the Sitka (I think) gear slinger. I was led to believe that the Vulture was the largest pack that Maxpedition makes, but I guess I was wrong.
My ONLY complaint with the bag is the lack of organizational compartments inside. Does the Condor have more?
I have seen $50 packs from a website (cheaperthandirt) that look nearly as rugged, have more pockets, organizational dividers & MOLLE webbing, but I would not rely on them as I would my Maxpedition packs. Maxpedition is like the SYKCO of the tactical gear market. Best price to performance, rugged, good warranty, and just downright bad @$$!
The other gripe I have with my setup is the color. I bought it in Black because it was a never used return that cost $40 or $50 less than a brand new one. The pouches are OD because I bought them from a forum member here when he was selling a bunch of gear. They are made by Tactical Tailor, which is also an awesome brand.
I need that add-on pouch/bag you have on the back; I love it. I'm going to go look up what that is.
I am going to buy another bag in OD or Tan and will likely go with a Maxpedition. I am going to look into the Condor II, for sure. I have refrained from becoming a pack/pouch junky because I already collect Knives, Flashlights and a couple other non-related things. It is really tempting, however, because I often find myself wishing I had a pouch in a different size, or that I could swap out bags for different uses or to change up colors.