In San Francisco, an AR-15 is a “Heavy Caliber Gun”.

First off… What is a Heavy Caliber Gun?  A .45-70?  .50 BMG?  40mm Bofors?   If I hear “heavy caliber” I’m thinking of Artillery or something Anti-Tank.  So I was thinking “3D Print some Artillery?  I’m in!”  And then I clicked the link.
I am sorely disappointed.  5.56mm and .223 are a .22 Caliber… that is not by any means a “heavy caliber”.  Maybe if your targets are Chipmunks.  Maybe.
I should have known though… The source is CBS out of San Fran… Every Caliber is a Heavy Caliber.
No one tell them that you can get an AR type rifle in .308.  They would shit themselves until they died.
Quick – someone tell them that you can get an AR type rifle in .308!