Bullet is a 4-inch round, repackagable bullet with dimensions of 4 inches x 16 inches. It is made of T304 stainless steel and features a 2.25-inch, 2.50-inch, or 3-inch free flowing spiral through core, wrapped in stainless steel mesh. By using electronic devices, an equal width and opposite phase sound wave is generated in the original sound field, which cancels out the original sound field within a certain range. The muffler is mainly composed of a microphone, an amplifier, a phase shift device, an amplifier, a speaker, and other parts.
