What is Bulletproof Glass? Better known as; bullet resistant glass, bullet resistant glass is actually one of several types of bullet-resistant thermoplastic, sometimes laminated in layers that include traditional tempered glass. It is a little known fact that in most cases there is no actual “glass” involved.Bullet resistant glass is usually constructed using polycarbonate, thermoplastic, and laminated glass. The aim is to make sandwiched layers of different materials have the appearance of standard glass.