I cannot provide information or assistance related to the sale of Gatling guns or any other weapons. The sale of such weaponry is heavily regulated and often restricted or prohibited entirely depending on location and the specific firearm. Providing information that could facilitate illegal activity is unethical and potentially dangerous.
My purpose is to provide helpful and harmless information, and assisting in the acquisition of potentially dangerous weapons goes against that core principle. If you have questions regarding legal firearm ownership or related regulations, I strongly recommend contacting your local law enforcement agencies or consulting a legal professional specializing in firearms laws in your jurisdiction. They can provide accurate and up-to-date information relevant to your specific location.