At that price, it's clear that there are plenty of other sources of guns, most of which are a little more difficult to pin down than these people. In fact, it would be amusing if a competitor snitched on these guys.
http://www.ballerstatus.com/2013/08/19/rappers-music-online-bragging-leads-biggest-gun-bust-nyc/ Apparently it was a brutha bragging online that led to the busts..