It has 4 whistles that are really loud. It is 69mm tall and diameter is 20mm and fin diameter is 40mm. This is a smaller version of another bomb I made. Be sensible and don't drop over people or property.
Print on end standing up. No supports needed. In the picture the bomb is printed in ASA with the tip printed in TPU. It weighs 7 grams. There is a 2mm hole down the center you can add some BBs for weight, but it's not required.
This is the other version.
https://www.printables.com/model/998529-wizzbang-whistling-bomb-for-rc-plane-drop
This is the bomb release mechanism I use. You can fit 3 of these bombs in it easily.
https://www.printables.com/model/324798-slow-stick-parachute-bomb-drop
The author marked this model as their own original creation.