Depending on the circumstances, the answer can be yes, no or maybe. You need to consult with a lawyer familar with MA firearms law.
Felony
Yes
No.
No. No convicted felon can ever lawfully be in possession of a firearm.
There is no statutes of limitations on a felony possession drug warrant. It forever stays active.
It depends on whether it was FELONY possession or MISDEMEANOR possession. If FELONY, no, you cannot ever again own or possess a firearm.
No, even the possession of a firearm of any kinda is a felony.
You need a lawyer for a current, legal and correct answer for your situation.
You will need a lawyer for a legal, correct and current answer.
Maybe - maybe not. If the gun was involved in a violent felony and you are in possession of it, yes, you could be charged with that violent felony. Even being IN a car with a gun places you in, what is called, "concurrent possession" of that gun.
Yes, if you were convicted of it. It's a felony charge.
Not enough information to answer. What is making the possession of it "illegal?" Was it used in an unlawful manner? Is it a stolen weapon? Are you an adjudged felon?