There were a lot of NJ legal AK type guns at the show this weekend. A friend of mine had a nice Arsenal 7.62 for sale at the Stonybrook tables, and a lot of Romanian etc guns too.
AKs are really pretty simple: you don't want it to match any of the named guns, you don't want a threaded barrel (or permanently attached f/s - but 9/10ths of AKs have muzzle brakes, which as long as they're welded on are fine), and no bayo lug or folding stock.
On the fixed stock guns the bayo lug is usually the giveaway - if it's got a bayo lug, chances are the muzzle brake (usually the slant kind on romanian guns) is NOT welded. If it doesn't push the detent pin in and try to spin the brake :)
We (Area 51 Tactical) had a great weekend at the show - just wish I wasn't so darn sick. Thank you to all the customers that stopped by :)
oh and nutbad - make sure you DON'T get a single stack 10rd AK from sarco. the double-stack hi-cap AKs are perfectly legal in nj, and 5, 10 and blocked to 15 round magazines are available. You do not want a nonstandard AK :)