By Avery Thompson
A firearm suppressor is a complicated piece of engineering that works by containing the high-pressure gases and exhaust when firing a bullet. If those gases have nowhere to go, they can't create shockwaves in the air and produce sound. But as you can imagine, keeping high-pressure, high-temperature gas contained is no easy task.
There are many different types of suppressor design, but because they're often enclosed in a metal case, it can be difficult to study them or watch how they work.
http://www.popularmechanics.com/adventure/outdoor-gear/a28357/suppressor-clear-slow-motion/www.youtube.com/watch?v=7pOXunRYJIw
