The import ban, instituted under GHW Bush under the "sporting purposes" provision of the 1968 Gun Control Act, and later modified under President Clinton has slightly different critera. additionally a 1990 law baned assembly of guns from imported parts that would create a gun that could not be otherwise imported. BATF's regulation [178.39, Commerce in Firearms] prohibits using more than 10 "imported parts," from a list of 20 parts, such as trigger, hammer, barrel, etc. BATFE sets the critera for "not importable". So these only apply to domestically produced arms, there is also a list of guns banned by name in the AWB law. From the AWB legislation:
`(B) a semiautomatic rifle that has an ability to accept a detachable magazine and has at least 2 of--
`(i) a folding or telescoping stock;
`(ii) a pistol grip that protrudes conspicuously beneath the action of the weapon ;
`(iii) a bayonet mount;
`(iv) a flash suppressor or threaded barrel designed to accommodate a flash suppressor; and
`(v) a grenade launcher;
`(C) a semiautomatic pistol that has an ability to accept a detachable magazine and has at least 2 of--
`(i) an ammunition magazine that attaches to the pistol outside of the pistol grip;
`(ii) a threaded barrel capable of accepting a barrel extender, flash suppressor, forward handgrip, or silencer;
`(iii) a shroud that is attached to, or partially or completely encircles, the barrel and that permits the shooter to hold the firearm with the nontrigger hand without being burned;
`(iv) a manufactured weight of 50 ounces or more when the pistol is unloaded; and
`(v) a semiautomatic version of an automatic firearm; and
`(D) a semiautomatic shotgun that has at least 2 of--
`(i) a folding or telescoping stock;
`(ii) a pistol grip that protrudes conspicuously beneath the action of the weapon ;
`(iii) a fixed magazine capacity in excess of 5 rounds; and
`(iv) an ability to accept a detachable magazine.'.
I prefer something like "civilian defense rifles" or maybe "anti terorism rifles", but I prefer the latter and really really like "militia rifles", since that is what they are, but it's also extremely non politically correct and sure to give any hoplophobic Soccer Mom or Dad a bad case of the vapors.