If a gun is found in a car how long before you know if your prints were on the gun and does the da have to tell your attorney if your prints was on it

DAs are supposed to turn over evidence to your counsel as soon after they find it. They have a duty to disclose, a failure to disclose is misconduct. Given they found the gun in the car and you at some point were in the car, that is still a big problem for you. Best of luck.