Jesus Christ, the comments are fucking retarded lol. They're full of basement-dwelling nerd rage lulz "OMG FULL AUTO SELECT FIRE IT'S NOT AN ASSAULT WEAPON CUZ COD SEZ SO PEW PEW PEW"
And about the comment sections, all of those guys are retarded. Arguing a simple technical term. I bet they wouldn't give a shit what is called if it was pointed at them.
Only problem with bullet proof glass, at least the kid we use, is that its incredibly easy to fracture. The smallest pebble going no faster than a 1 year old could throw is enough to make it spider 6-7 inches.