I received my case of this ammo yesterday. It's packed very nicely. The ammo is loaded onto 10 round stripper clips, and each clip is sealed in a plastic blister. There's 30 of these sealed blisters in a cardboard sleeve, secured by a shipping strap. That makes for 300 rounds in a sleeve, and there's three of these sleeves in an unused 50 caliber metal ammo can for 900 rounds total. The cartridges themselves are bright and clean, with annealed case necks.
I don't know anything yet about performance, but the ammo does have the NATO cross on the case so that means it has to conform to standards. This is a good buy for anyone needing some 5.56.
ETA: here are some pics of what you get