I haven't checked my LGS recently, but I've been to two separate Walmarts and seen 7.62x39 and one had 6-7 500 round cases of TULA .223.
'A Vote is like a Rifle; It's usefulness depends upon the character of the User.'-Theodore Roosevelt
'In a Man to Man fight, the Winner is He who has one more round in his magazine.'-Erwin Rommel