Last year,  42 Dugg was arrested by the feds for failing to report to a West Virginia prison to serve a six-month sentence for gun possession as a felon.

Agents caught the rapper in a private jet he was taking back home to Detroit after watching an NBA playoff game in Memphis.

He tried to get out of his legal predicament by claiming he was a  sovereign citizen and immune to the laws of the United States.

As you may have guessed that didn't work and Dugg has been living in a Federal pen since.

Now it looks like he's going to end up doing a lot more than his initial six-month sentence.

This week, Dugg pleaded guilty to another illegal firearm charge and faces up to five years and a 250K fine.

At least he had been making friends in prison.