Quote Originally Posted by cofi View Post
Full auto ars are hard to make without a jig and mill for the third pin hole he also had smoke granades and teargas I'm wondering if he stole the stuff
there are lowers out there with the shelf already for a drop in auto sear.

the sear could have been fabricated, could have been bought illegally, or purchased from an M16 parts kit. Either way it would be illegal. But legality obviously had no meaning to James Holmes.
He also has the knowledge to create booby traps, possible firebombs from what I gather at his apartment.

A degree in biology and studying neuroscience means he has sort sort of knowledge on a lot of this stuff...and if he didn't some of his friends surely did.