The suicide screenings we have to do every 6 months on every patient that comes to my VA clinic asks whether the veteran has access to firearms or not. I've had only three or four patients take offense to my asking about if they have a firearm, and whether they should. Interestingly, those few who took offense are generally those with strong cluster B traits and feelings of powerlessness in their lives, and say stuff like "ain't nobody gonna take my guns, I might need them for the revolution. That Muslim Obama is going to outlaw all guns, he is going to establish dictatorship and never leave office, but I'll have MY guns." Ok. I then screen for psychosis. If none, we move on.
Nobody has fired me over the gun question. I make sure they know I care about their safety, not their politics. Usually if they later fire me it is because I won't prescribe endless Xanax 1mg PO QID for PTSD or hip pain or whatever.