FWIW....
I sell and deal in firearms and archery for a living.
I had a guy who messed up when he was younger come in and want to buy a handgun. He'd been busted 15 years ago for assault and battery or something like that.... he was young... and he kinda got rail-roaded.
As he put it, and he checked with his PO and his lawyer, that you are eligible to petition the courts for your rights back after 7 years of a clean record after the end of your probation. Something like that.
He wanted to buy a firearm, and I told him straight up that I had no problem with him filling out the paperwork, but for his sake, he best make damn sure he was right. And he was.