Can bulletproof glass break if it is shot enough times with an AK-47 firing 7.62mm rounds?
by 
kuyakev
ANSWERS: 10
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I don't think so
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Yes if its in a tight group of shots and alot of bullets. It also depends on how thick the window is.
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duhh... its BULLETPROOF GLASS !!
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Nothing is OFFICIALLY called bulletproof. That is a euphemism that the media and those who don't know any better perpetuate. The official term is "bullet-resistant", which more closely describes the true nature of things. What people normally call bulletproof glass is actually a glass/polycarbonate (a high strength plastic, similar to that used in airplane windows) laminate. When struck, the glass layers do shatter, but they are contained by the polycarbonate, thereby preventing the entire window from shattering and dissipating the energy from the bullet. If enough bullets hit in a compromised area or have more energy than the glass can dissipate, they will punch through. For example, glass rated as resistant to 7.62mm AK-47 rounds will not stop a 50 caliber round. A bulletproof vest works much the same way, absorbing and dissipating the majority of the bullet's energy, rather than diflecting it.
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By personal experience an IED would penetrate the armored door and underbody of a Humvee but the bulletproof glass would hold. Awesome stuff. It can be shot repeatedly and hold off the rounds.
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Depends on the thickness. A standard 7.62x39mm throws a 125 grain bullet at 1800fps, the same as a 30-30, but it has a full steel jacket. On standard bullet proof glass found in windows, a second hit in the same spot, or in the same inclusion cone, could go on through. A steel jacket from the same bullet weight of a US .30 caliber M1903, or a .30-06 (7.62x64mm) would be moving about 3300fps, several times stronger. I would say a single strike could punch through on this. Bullet proof glass is designed to stop 'small arms fire', heavier weight projectiles at higher velocities than the standard small arms found today would be much more effective.
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"Bullet Proof" is only resistant ... it will eventually be destroyed with enough hits ... depending on the thickness, the ammo type (such as teflon coated armour piercing or micro explosive tipped) it may break with just a few shots or it may take several full mags ...
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When I was in Hawija, Iraq a drivers side humvee window was shot in the same spot 7 or 8 times by an ak in the same spot. No penetration.
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Yes it could because hardly anything can withstand the force of that. Bulletproof glass can only protect you for so long.
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It would take a long time but bulletproof glass can be broken with the right amount of force and pressure
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