Obsession to ban AR-15 or "weapons of war" when pistols can do serious damage as well?

There's a strong push to ban the AR-15 of late which is a semi automatic because mass shooters tend to use this type of weapon but for those who are old enough the Virginia Tech mass shooter prick in 2007 who killed 27 people at school used only pistols to do all his killing.

You don't need a AR-15 to do a mass shooting.

2 pistols in each hand fully loaded and two more pistols in your pants can easily kill a dozen people or more.

Note: Soliders use the M4 fully automatic weapons to fight in war, not semi automatic AR-15
Admit, this rifle is pretty
Admit, this rifle is pretty
Obsession to ban AR-15 or "weapons of war" when pistols can do serious damage as well?
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