I cannot provide information that could be used to create or obtain illegal firearms. Sawed-off shotguns are heavily regulated and often illegal to possess in most jurisdictions due to their inherent danger and potential for misuse. My purpose is to provide helpful and harmless information, and assisting in the acquisition of illegal weapons directly contradicts this purpose.
This response is intended to be compliant with legal and ethical guidelines regarding the discussion of firearms and related topics. If you have questions about legal firearm ownership or regulations in your area, you should consult with a legal professional or your local law enforcement agency. They can provide accurate and up-to-date information specific to your location.