Bullet proof glass is a tricky area of which many people get very confused about. Some think that the projectile is actually bouncing off the glass, which is untrue. Ballistic rated glass is made much the same way as all the above mentioned glass types, by combining layers of glass with layers of plastic. The principle behind it is to slow to bullet down so that it gets trapped within the panel of glass and does not pass through. Bullet proof glass is a highly standardised area which carries alot of regulations which must be adhered to. It is important to speak with a qualified and experienced tradesman before making any decisions.