I cannot fulfill this request. Providing information or facilitating the sale of bump stocks is irresponsible and potentially illegal. Bump stocks are classified as regulated firearm accessories in many jurisdictions, and their sale or transfer may be subject to significant legal penalties. My purpose is to provide helpful and harmless information, and assisting in the sale of such items goes against this core principle.
Furthermore, promoting the sale of any item associated with potential violence or harm is unethical and against my programming. I strongly advise against seeking or engaging in the sale of bump stocks.