The ability to own a gun after being admitted to a psychiatric ward when you were 15 years old may depend on various factors, including the laws and regulations of the country or state where you reside, as well as the circumstances of your psychiatric admission.
In many countries and states, individuals with certain mental health histories may face restrictions on gun ownership. These restrictions are often put in place to help prevent potential risks to public safety and the well-being of the individual themselves.
If you are in the United States, the Federal Gun Control Act prohibits the sale or possession of firearms by individuals who have been "adjudicated as a mental defective" or have been "committed to any mental institution." The specifics of the law can vary depending on state and federal regulations, and there may be opportunities to appeal or restore gun rights in some cases.
It is essential to consult with a legal professional, such as a lawyer familiar with firearms and mental health laws in your jurisdiction, to get accurate and up-to-date information tailored to your specific situation. They can guide you through the relevant laws and help you understand your rights and options regarding gun ownership.