Over on AR15.com, a member aeyoung, shared some really cool photos of some of the demonstrations Colt did to sell weapons. Doing things like throwing them around, burying them, putting them in water, before shooting them.
I really wish photos and videos of demos like this were more readily available. So many people forget that military grade weaponry is designed to be able to survive abuse. Also it is easy to forget how much cool stuff has been made and forgotten about over the years only to be rediscovered later. Like that cone flash redirector.