You will need a lawyer, money, patience and be prepared for the answer to be no to find out.
Federal law- 5 years
Federal law- 5 years. No parole
If you are not a convicted felon, or have not been convicted of a crime of Domestic Violence, there is no prohibition against owning or possessing a shotgun, or any other firearm.HOWEVER - if you are a convicted felon or a convicted Domestic Abuser, and you are arrested in possession of a firearm, you could face up to 15 years in prison.
5-15 yrs
This depends on the exact charges brought, and the prior record of the person charged.
5-15 yrs
5 yrs
The federal maximum for this offense is 15 years in federal prison.
Unless there is some legal factor which prevents you from possessing a firearm (e.g.: you are a convicted felon or convicted of domestic abuse), there is no legal prohibition against having one, especially at 18 years of age.
5 years- Federal law. No probation, no parole.
It depends on whether they were charged under state or federal statute. If charged under federal law, they could receive up to 15 years for simply possessing the firearm, much less discharging it. In addition - any other crime that was associated with their discharging of it, could be added on to the possession charge.
Not enough background info to asnwer. If you are in LEGAL possession of them, there is no penalty. If you are a convicted felon in possession of them you could be looking at significant state and/or federal time.