pro-bono atty in criminal defense in st of MS for possession of controlled substance and possession of gun charges

Respectfully, there are several issues with your call for help which impact any other lawyer's ability to assist your son. First, while you do not say so, I am assuming he is an adult. As such, he must chose whether he wants to continue using the PD lawyer or seek the assistance of another counsel. This is not something you can do for him, as it his right to be represented by counsel at issue. Second, he is already represented, and your facts do not indicate that he is dissatisfied withy the representation. If he is, he should first discuss the basis for the dissatisfaction with his lawyer, as it may be something that is easily resolved. He also needs to be discussing with his lawyer what the legal issues are, and defense is, of this charge. Lastly, almost all pro bono work involves civil law, not criminal representation. While these may not be the things you want to hear, they all apply to this situation. Discuss the situation with your son, and if he wants to get a second opinion on the issues presented by his case, he can either address them here on Avvo.com, or consult directly with a defense lawyer licensed to practice law in MS. Similarly, he could address his specific questions about the representation as well. Good luck.

Disclaimer
This information is offered for informational purposes only, as I do not practice law in your State. It is not intended as legal advice and you should not rely upon it to decide how to resolve this issue. No Attorney-Client relationship is intended or established by this response. You are faced with a situation where you need to consult with an experienced defense lawyer admitted to practice law in your State before you make any decisions as to how to resolve this issue.