I was recently watching the season 4 episode Meet Kevin Johnson and thought about something.
At some point, Michael buys a gun wanting to kill himself out of guilt for everything he's done to get off the island.
When he's about to pull the trigger sitting in an alley, Tom finds him. A scuffle begins as Michael tries to shoot Tom but Tom succeeds in taking the gun from Michael.
Afterwards, Tom tells Michael that no matter what he does, he won't be able to kill himself because the island won't let him. He even gives him his gun back and dares him to try.
As you all probably know, the gun jams just like Tom said and Michael then believes Tom's claim.
My question to you is: Do you think there's a possibility that Tom, trying to manipulate Michael into going onto the freighter, gave a different gun (that wasn't working) back to Michael in the alley to make him think he can't do it?
Of course, there is another occasion when Michael tried to commit suicide by ramming his car into a dumpster and survived... But that could just be a coincidence.