You might contact the Calguns Foundation [calgunsfoundation.org] and explain your situation to them. They may be able to recommend an attorney who can help you.
I second this excellent advice. This is about much more than the cost of a CZ75 vs. the cost of a lawyer. Your right to ever possess a firearm again
may well be in jeopardy.
Look to calgunsfoundation or the NRA for assistance, but I would by all means fight this in court.
Violence is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and valorous feeling which believes that nothing is worth violence is much worse. Those who have nothing for which they are willing to fight; nothing they care about more than their own personal safety; are miserable creatures who have no chance of being free, unless made and kept so by the exertions of those better than themselves. Gary L. Griffiths, Chief Instructor, Advanced Force Tactics, Inc. (Paraphrasing John Stuart Mill)