If you have been adjudged as mentally incompetent you can't legally buy a firearm. They should have been coordinating this decades ago. This only applies to those who have been found by a federal judge to be so incompetent, that they can't hold down a job, even with medication. And further, are so incompetent that someone else must manage their manage their affairs. The individual, or a legal guardian have to petition for a hearing for it to even get in front of the hearings judge. Does anyone in this status really seem competent enough for the responsibilities of owning a gun? Folks are confusing two different issues here. Common definitions of "mentally incompetent", and how hard it actually is to convince a Social Security Hearings Judge, that a person is sufficiently impaired that even with ongoing medical care they are incapable of functioning in any job, even with job coaching, and declare them as "incompetent". It takes a second hearing to declare them incompetent to manage their own financial affairs. A lot of folks are concerned about the definition on incompetent and how it is not a definition of mental illness. The determination of incompetence is independent of the underlying mental cause. It is a legal, not clinical determination. The person or their legal guardian, must petition a Federal Judge to be allowed to draw social security benefits, because due to whatever clinical condition they have, the level of their symptoms makes them incompetent to hold down a job.