This video is part of a set that I used in researching my current eBook on Firearm Suppressors. It shows how to mill a custom suppressor, if you have the equipment. It provided much information to my eBook which talks about the history, science, development, and State-to-State laws (in the U.S.) regarding firearm suppressor/silencers. It is a fascinating subject, and I intend on publishing this eBook soon.