Wait, criminals will conduct illegal and illicit activity  to circumvent the law? NO WAY *sarcasm*.
A survey conducted by researchers from Duke University and the University of Chicago found that Chicago criminals obtained their firearms almost exclusively from friends and family.
The survey, funded by the Joyce Foundation and set to be published in the October edition of Preventive Medicine, consisted of interviews with 99 inmates at Chicago’s Cook County Jail who had illegally possessed a gun within six months of their incarceration. It found that most criminals only acquired guns from people they knew and trusted.