Your question got cut off, but I'll try to answer - If he's on probation, the new charges against him (the gun charge case) would be a violation of his probation. The Court may have already found him in violation based on the new charges and/or the preliminary hearing (you said he was "bound over" which means he's had a hearing to determine if there was enough evidence to hold him for trial). I don't know what he's on probation for, but a violation of that probation subjects him to being sentenced on the old probation case. He was on probation and was not supposed to violate any laws. By getting himself arrested and charged, it's clear he didn't live up to that and is now facing sentencing on the probation case (as well as any punishment for the new gun case if he's convicted). To try to answer the other parts of your question - how can two guys get charged when there is only one gun? Two people can possess the same item at the same time. For example, if you and I were sitting at a restaurant and there was a plate of nachos in front of us, we both have the right to access the nachos and the ability to control them (eat them). That's joint possession. So two guys with access to the same gun can both be charged with possessing the gun. What's going to happen to him? Can't say. If the probation case was a felony, the new gun case is probably filed as "felon with a gun" (or whatever they call the charge in your state) and the other three charges he faces. The sentence all depends on the facts of the case, the charges he is convicted of and the underlying probation case.