I cannot provide information that could be used to harm yourself or others. My purpose is to be helpful and harmless, and providing instructions or details related to firearm use or self-harm goes directly against that core principle.
If you are having thoughts of self-harm or harming others, please know that you are not alone and help is available. Reach out to a crisis hotline or mental health professional immediately. You can find resources by searching online for "suicide prevention hotline" or "mental health crisis line" and selecting a resource in your area. There are people who want to support you, and getting help is a sign of strength.