It’s not just hardware, but high-level coordination with federal agencies and a dangerous mindset that sees citizens as enemies.
http://prn.fm/alternative-visions-militarization-police-071914/
Who knows what’s available now, but here are some of the toys they had in the locker as of five years ago:
http://www.opednews.com/articles/Robocops-Come-to-Pittsburg-by-mike-ferner-090928-713.html
More recent reports from the aclu:
http://www.aclu.org/war-comes-home-excessive-militarization-american-policing