The one restriction I heard the liberals on the radio speaking of today was magazine size, and how if the assault weapons ban were in effect the shooter wouldn't have had access to 30 round magazines and his ability to do as much damage would have been limited.
Personally as someone who does not own, nor has any intent to own a firearm I just don't see the logic, you can swap a clip in a matter of seconds, so having one clip that holds 30 rounds, or a few which hold ten would seem a wash....
They also went on about how guns are sold at Walmart etc, but again in this case I fail to see how that is an issue, nor should it matter so long as all retailers selling firearms are licensed to do so and follow the proper procedures.
I do feel that if they springboard off of this tragic event they will have enough steam to get another AWB into effect, but I doubt it would do anything to curtail gun violence and is more of a token showing of them doing something in the wake of the killings.