Sometime recently a few C-17 crewmembers were convicted of bringing some AKs from Iraq and might be locked up in the Leavenworth military prison for a while.
A guy I worked with might have a buddy in their former active or reserve squadron (Charleston AFB?).
Assuming that this story is accurate, they will probably never be allowed to legally own a gun when they are released, if they are considered felons as civilians.
As an admittedly strange comparison, let's consider that you can be locked up for five years simply for injuring a Florida alligator, from what I read last night, and fined a few thousand US rubles. You can be charged with a crime for putting one in your car etc. This really surprised me.
A veteran whose AR malfunctioned and went full-auto (though borrowed by somebody else and used at a range) is now in prison in Minnesota for a few years.