Which is it?

Do you think the gun used in this recent officer involved shooting was:

A)  After it was turned in at a gun buyback in 2004 someone then resold back into the black market, eventually ending up in the dead gang members hands 15 year later

or

B)  A bent Chicagoland cop snagged it from the pile, always intending to use it as a relatively untraceable Drop Gun. If he needed one. 

I lean B.