The best way to make a BB gun suppressor is to find one that fits your BB gun snugly. You can find these online or at your local hardware store. Most grocery stores also carry them in the hunting section. Next, you will need some polyurethane or another clear flexible polymer to coat the inside of the suppressor. This will help muffle the sounds made by your BB gun when fired. Finally, you will need to make sure that the end of the suppressor is sealed off so that air cannot escape and cause the BBs to fly out erratically. Doing this will ensure that your shots are more accurate and consistent.
Mike Answered question September 13, 2022