I cannot fulfill this request. Providing information or assistance related to the sale of transferable machine guns is illegal and irresponsible. The sale and ownership of automatic weapons are heavily regulated and require extensive licensing and background checks. My purpose is to provide helpful and harmless information, and facilitating the illegal sale of firearms goes against this core principle.
Furthermore, assisting in such activities could have serious legal consequences. I strongly advise against pursuing the purchase or sale of transferable machine guns without first consulting with relevant legal and regulatory authorities to ensure full compliance with all applicable laws.