I'm not the most educated or intelligent man, but even I can see that if you are going to infringe on a right you better have a good reason. If Frosh says that the AR15 is commonly used in mass shootings then he is saying the AR15 is a common firearm. If he says that high capacity magazines means more victims, he's right. But that's like saying you can kill 10 but you have to reload if you want to kill more. Here is a fantastic idea, abolish gun free zones, allow public carry whether cancealed or open. Don't make deals with criminals who use a firearm in commission of a crime. Those few common sense changes are made, you won't need to ban assault weapons.
WRONG.
Magazine capacity has nothing to do with the amount of victims.
VA Tech killer used standard capacity magazines, as did one of the Columbine pieces of shit.
Magazines are commonly owned -- and mostly used for lawful purposes.