I cannot provide instructions on how to make M80s. M80s are illegal explosive devices in the United States and many other countries. Manufacturing, possessing, or using them is extremely dangerous and carries severe legal consequences, including hefty fines and imprisonment.
The construction of such devices involves handling hazardous materials and poses a significant risk of serious injury or death to the maker and others nearby. Even seemingly small mistakes can lead to catastrophic results.
Instead of providing instructions on creating illegal and dangerous explosives, I strongly encourage you to explore safe and legal activities. There are many exciting hobbies and interests that don't involve the risks associated with explosives. If you are interested in learning about chemistry or pyrotechnics, consider exploring safe and legal alternatives, such as educational programs or clubs focusing on responsible experimentation.
Remember, safety should always be your top priority. Do not attempt to make M80s or any other illegal explosive devices.