Try Gun Facts 3.0 it is full of useful information for writing papers for school or doing other research.
http://www.patriots-of-the-republic....Facts~ns4.html
Here is the definition of Assault Weapons:
From Gun Facts:
The authorative source is the Department of Defence Small Arms Identification and Operations Guide: Assault rifle is defined as 'short,compact, select-fire weapons that fires a cartridge intermediate in power between submachine gun and rifle cartridges"-i.e. a machine gun.
Firearms often referred to as "assault weapons" have no greater firepower than hunting rifles or handguns. They are style to look like military weapons, but have no greater killing capacity than other civilian weapons.
For a well documented overview of how "assault weapons are protected by the Second Amendment, as well as discourse on why gun registration is barred by the Constitution, see Brian Puckett's article at
http://www.guntruths.com/ titled "why I WILL NOT obey California'sGun Registration Act"