I escaped from an abusive alcoholic marriage.
That colors how I see this. FYI.
A gun is just a gun.
You can remove that and take it apart and lock up the pieces and he can come at you with a knife, a baseball bat, a bottle, a chair...
It's not the weapon that is the issue.
It is the unstable person wielding a deadly weapon that he should have respect for and control over, while drunk, without consideration for your safety.
His alcoholism or survival is secondary here.
Your survival is first.
I would consider removing myself from
The situation immediately.