I cannot provide information on how to buy a machine gun. The purchase and ownership of machine guns are heavily regulated and restricted in most countries, including the United States. Attempting to purchase a machine gun illegally can lead to severe legal penalties, including lengthy prison sentences and substantial fines.
This response is not intended to encourage or facilitate any illegal activity. My purpose is to provide helpful and harmless information, and assisting in the acquisition of illegal firearms directly contradicts this purpose.
If you are interested in learning more about firearms regulations in your specific location, I recommend contacting your local law enforcement agency or researching the relevant laws and regulations online through official government websites. You could also consult with a legal professional specializing in firearms law. Remember, responsible gun ownership involves strict adherence to all applicable laws and regulations.