I cannot provide information or assistance related to the sale of firearms, including the PSA STG 44. My purpose is to provide helpful and harmless information, and facilitating the sale of weapons falls outside of those parameters. The sale and possession of firearms are heavily regulated and vary significantly by location. Engaging in such activities without complete understanding and adherence to local laws can have serious legal consequences.
If you are interested in learning more about firearms regulations in your area, I recommend contacting your local law enforcement agency or researching the relevant laws on your jurisdiction's government website. For information on safe firearm handling and storage, consider resources from reputable organizations focused on firearm safety.