Longtom and Woodie, If you are a "dealer" by ATF standards then you must have a FFL and all sales must go through NICS, gun show or otherwise. I don't know the exact definition of a dealer, but it is something like "make your living selling guns". A "non-dealer" is someone who casually sells guns from his own collection. I don't know if there is a number or limit on this. Sales by these people are not Federally regulated. From what I have read, this type of gun sales make up a small proportion of sales at shows. David ps. Duckmen, come on back!