How do they make gun silencers?

Answer 1

A silencer does not truly make a gun silent- it suppresses (reduces) the noise from firing. In the US, making or possessing a silencer without having first completed the paperwork and paying a $200 tax is a very serious crime. A silencer consists of inner and outer metal tubes and end caps. The space between the inner and outer tube will have baffles to slow and cool the gasses generated by firing the gun. The inner tube will have holes along its length to allow gasses to move from the center tube to the space between. When the gun fires, the bullet travels through the center tube. Gasses pushing the bullet escape through the holes of the center tube, where they are slowed and cooled by the baffles. The bullet leaves the end of the center tube, creating much less noise. The tubes and end caps are usually threaded and screw together.