The NY Times article said the guns were often stolen. North and South Carolina really should pass a law making stealing guns illegal.
http://www.nytimes.com/2013/08/20/nyregion/gun-seizure-exposes-pipeline-from-south.html
"A lot of firepower,” Mayor Michael R. Bloomberg mused as he paused to look at some of the 254 guns — large-caliber pistols and military-grade weapons modified to improve aim and avoid detection — that were bought by the police during the yearlong undercover investigation."
BTW, what, exactly are "large-caliber pistols and military-grade weapons modified to improve aim and avoid detection", and where can I buy some like that?
Everytime I look at the photo you loaded (thank you), I think those fools are accidents waiting to happen. Guess the attendees are supposed to feel safe because the magazines were removed. What if some of the displayed guns were chambered??? Suppose there was a “Major Hasan” standing near that table waiting for the opportunity to take out someone in that room during their cute photo op?