Is this correct? Shooter's mom owned assault rifles???

[SpartanDem]

66. She didn't own any automatic weapons

if you're AR-15 SEMI-automatic, which mean it shoots one bullet per pull of the trigger. Full automatic guns are very tightly regulated.

Civilian ownership of assault rifles or any other full-automatic firearm is tightly regulated by the Bureau of Alcohol, Tobacco, Firearms and Explosives under the National Firearms Act of 1934 as amended by Title II of the Gun Control Act of 1968. In addition, the Firearms Owners' Protection Act of 1986 halted the manufacture of assault rifles for the civilian market and currently limits legal civilian ownership to units produced and properly registered with the BATFE before May 1986. Some states have enacted laws against civilian possession of automatic weapons that override NFA clearance; Kansas, on the other hand, repealed its own state law against civilian ownership of assault rifles in July 2008.[24] Civilians may purchase semi-automatic versions of such firearms without requiring NFA clearance, although some states (including California and New Jersey) enforce their own restrictions and/or prohibitions on such weapons.

http://en.wikipedia.org/wiki/Assault_rifle#United_States