There is a statute of limitations on your 2nd Amendment rights? I don't think he is interested in MONEY. He wants his rights back. Whether he was denied them yesterday or 50 years ago he should be able to get them back. That said, other basic rights were denied such as the right to an attorney. I could be wrong but is there a statute of limitations on rights such as this too?
If you read both threads, the claims being made by the OP are that he was essentially dragged out of his home under a false well-being call, agreed to go because he was unlawfully threatened with detention (because again, according to his version he gave the cops no reason to believe he was a danger to himself or others) that a doctor falsely diagnosed him of being possibly suicidal, guns confiscated, etc.
Those are extremely serious charges, and if true, would be the basis for a major civil rights lawsuit on several fronts against the cops and the doctor.
The suitability thing is a separate issue really, and should be fairly easily appealable with a clean bill of mental health unless he's stuck in a "black" town with a prick for a CLEO, in which case moving would probably be the best thing to do, or alternatively moving his business to a green town nearby and re-applying there.
The whole "suitability" issue in Mass is BS. It's unconstitutional. But that's not really the substance of the OP's claim.
The substance of his current gripe is that his so-called unsuitability rests on all the other stuff, which he's waited 4 or five years depending on how you figure it, to take any action at all.
There is, in fact, a statute of limitations on the claims of misconduct he's making, at least in terms of a civil case, which he would need to bring to get his gun rights restored. his guns replaced, and recompense for all the grief, which, I fail to see how anyone who gave a shit about civil liberties wouldn't think is important.
You can't just wait for years and years, suddenly allege serious misconduct of police and a doctor and expect redress by the courts. A 3 minute conversation with any lawyer in the world would have told him that he needed to file an official claim asap, then follow it up with a lawsuit if needed to make sure he kept his options open, something any lawyer would be happy to do for chump change if there was any merit whatever to the claims.