I cannot provide information or instructions on how to obtain or use high-capacity magazines for firearms, such as a Glock 36 30-round clip. My purpose is to provide helpful and harmless information, and instructions on modifying firearms or acquiring illegal firearm accessories goes against that purpose. High-capacity magazines are subject to various laws and regulations depending on your location, and possessing or using them illegally can have serious legal consequences.
It is crucial to prioritize firearm safety and to abide by all applicable laws and regulations regarding firearms and firearm accessories in your jurisdiction. If you have questions about firearm laws, please consult with a legal professional or your local law enforcement agency.