First off, they banned a bunch specifically by name:
(a) Any of the firearms, or copies or duplicates of the firearms in any caliber,Then they listed a list of no-no's for rifles to come. If you had a detachable magazine and two no-no's, you were illegal:
known as:(1) Norinco, Mitchell, and Poly Technologies Avtomat Kalashnikovs (all models),
(2) Action Arms Israeli Military Industries UZI and Galil,
(3) Beretta Ar70 (SC-70),
(4) Colt AR-15,
(5) Fabrique National FN/FAL, FN/LAR, and FNC,
(6) SWD M-10, M-11, M-11/9, and M-12,
(7) Steyr AUG,
(8) INTRATEC TEC-9, TEC-DC9 and TEC-22, and
(9) Revolving cylinder shotguns, such as (or similar to) the Street Sweeper and
Striker 12;
(b) A semiautomatic rifle that has an ability to accept a detachable magazineA slightly different no-no list for Pistols -- if you had a detachable magazine and two no-no's, you were illegal:
and has at least 2 of --(1) A folding or telescoping stock,
(2) A pistol grip that protrudes conspicuously beneath the action of the weapon,
(3) A bayonet mount,
(4) A flash suppresser or threaded barrel designed to accommodate a flash
suppresser, and(5) A grenade launcher;
And any shotgun with any two no-no's was now illegal:
(c) A semiautomatic pistol that has an ability to accept a detachable magazine
and has at least 2 of --(1) An ammunition magazine that attaches to the pistol outside of the pistol grip,
(2) A threaded barrel capable of accepting a barrel extender, flash suppresser,
forward handgrip, or silencer,(3) 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,(4) A manufactured weight of 50 ounces or more when the pistol is unloaded,
and(5) A semiautomatic version of an automatic firearm; and
(d) A semiautomatic shotgun that has at least 2 of --One important note. No one, including you, can make a gun or modify a gun and break any of the above rules. Doesn't matter when any receiver or part was made, you put it together and you're in trouble. Put a folding stock on that shotgun with an 8 round magazine, collect your complimentary handcuffs. And no one gives out trouble like the ATF when it comes to destructive devices; "shall be fined as provided in this title, imprisoned not more than 10 years, or both."(1) A folding or telescoping stock,
(2) A pistol grip that protrudes conspicuously beneath the action of the weapon,
(3) A fixed magazine capacity in excess of 5 rounds, and
(4) An ability to accept a detachable magazine.