I am going to disagree 1000% w/enforcement.
1. Are banned firearms being sold at local gun shops or being shipped in from online sales. NOPE. The law is ENFORCEMENT.
2. The State's immediate challenge of the Injunction: (which won) froze sales, put almost all sales in limbo, and cost FFL Dealers thousands of dollars in return shipping cost, refunds, credit card fees, and down right p*****-OFF CUSTOMERS. ENFORCEMENT SUCCESSFUL.
3. Because of vague interpretions of PICA, more firearms & accessories are being banned than needs to be. ENFORCEMENT has flourished.
4. Now, if you meant criminal charges, who has direct knowledge of traffic/criminal stops where the person was in violation of PICA and NOT charged?