I believe that a criminal that has served his sentence is a criminal no more.
Or would you like to explain how a criminal, having performed the punishment dictated by the law, must always be under condemnation from the law?
If you murder someone or repeatedly use a gun inappropriately I don’t want you armed and neither do most of my fellow citizens.
Some actions are worthy of life time punishment, even loss of rights. Jail time is only one element of punishment.
Now if you are saying that some felonies do not deserve a lifetime loss of certain rights I might well agree with you.