This is what the bill in 1994 did
All semiautomatic rifles that can accept a detachable magazine and have at least one military feature: pistol grip; forward grip; folding, telescoping, or detachable stock; grenade launcher or rocket launcher; barrel shroud; or threaded barrel.
All semiautomatic pistols that can accept a detachable magazine and have at least one military feature: threaded barrel; second pistol grip; barrel shroud; capacity to accept a detachable magazine at some location outside of the pistol grip; or semiautomatic version of an automatic firearm.
All semiautomatic rifles and handguns that have a fixed magazine with the capacity to accept more than 10 rounds.
All semiautomatic shotguns that have a folding, telescoping, or detachable stock; pistol grip; fixed magazine with the capacity to accept more than 5 rounds; ability to accept a detachable magazine; forward grip; grenade launcher or rocket launcher; or shotgun with a revolving cylinder.
All ammunition feeding devices (magazines, strips, and drums) capable of accepting more than 10 rounds.
157 specifically-named firearms (listed at the end of this page).